Could not open egl display

aV_V · wrote on 15 Nov 2016, 16:44

I have built a Linux image using Yocto Project. Also built Qt SDK to be able to develop qt applications for my board.

The OS is console-only, so I want to use EGLFS plugin with the vendor implementation backend (eglfs_viv).
What are the previous steps that I need do to be able to run graphical Qt applications ?

I have connected a touch panel. And I'm testing a simple QtWidget application. But I get this output (with debug enabled) when I try to run it:

# ./helloworld     
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_viv")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_viv")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_viv"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_viv"
QEglFSVivIntegration will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.
 If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Could not open egl display
Aborted

Having exported:

QT_QPA_PLATFORM=eglfs
QT_QPA_EGLFS_FB=/dev/fb0
DISPLAY=:0.0

Any idea why is failing?

SGaist · 16 Nov 2016, 08:02

Hi and welcome to devnet,

Are you sure you have the rights to access the video device ?

aV_V · S SGaist 15 Nov 2016, 21:55

@SGaist Thanks.
There is only a root user (me).

 crw-rw---- 1 root video 29, 0 Nov 16 07:43 /dev/fb0
 -rwxr-xr-x 1 root root 881828 Nov 15 15:18 helloworld

update:

My touch panel has image but the touch doesn't work

tslib: Selected device is not a touchscreen (must support ABS and KEY event types)

Idk if that could affect on the display detection?

edit: I fixed it. It was missing the driver. Now I have touch. But still the egl error didn't disappear.

SGaist · 17 Nov 2016, 08:11

Did you already saw this wiki page about the imx6 ?

It might give you some additional clues

aV_V · S SGaist 16 Nov 2016, 20:36

@SGaist Yes I did. It's supposed to be simple, just setting the QPA plugin platform u want to use and it should work. But not in my case :(

Hmm, I think I found the problem.

This is how I deployed my application:

.
├── egldeviceintegrations
│   └── libqeglfs-viv-integration.so
├── helloworld
├── libEGL.so.1
├── libGAL.so
├── libGLESv2.so.2
├── libpng16.so.16
├── libQt5Core.so.5
├── libQt5EglDeviceIntegration.so.5
├── libQt5Gui.so.5
├── libQt5Widgets.so.5
├── libVSC.so
└── platforms
    ├── libqeglfs.so
    ├── libqminimalegl.so
    ├── libqminimal.so
    └── libqoffscreen.so

Having built it setting rpath:

unix:{
    QMAKE_LFLAGS_RPATH=
    QMAKE_LFLAGS += "-Wl,-rpath,\'\$$ORIGIN\'"
}

# ldd helloworld 
libQt5Widgets.so.5 => /home/root/helloworld/libQt5Widgets.so.5 (0x769e9000)
libQt5Gui.so.5 => /home/root/helloworld/libQt5Gui.so.5 (0x76572000)
libQt5Core.so.5 => /home/root/helloworld/libQt5Core.so.5 (0x76054000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x75f13000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x75ee7000)
libc.so.6 => /lib/libc.so.6 (0x75dad000)
libpthread.so.0 => /lib/libpthread.so.0 (0x75d84000)
libGLESv2.so.2 => /home/root/helloworld/libGLESv2.so.2 (0x75c8b000)
libm.so.6 => /lib/libm.so.6 (0x75c0d000)
libz.so.1 => /lib/libz.so.1 (0x75beb000)
libpng16.so.16 => /home/root/helloworld/libpng16.so.16 (0x75bb3000)
libdl.so.2 => /lib/libdl.so.2 (0x75ba0000)
librt.so.1 => /lib/librt.so.1 (0x75b89000)
/lib/ld-linux-armhf.so.3 (0x76ed7000)
libGAL.so => /home/root/helloworld/libGAL.so (0x75a8d000)
libEGL.so.1 => /home/root/helloworld/libEGL.so.1 (0x75a6d000)
libVSC.so => /home/root/helloworld/libVSC.so (0x759ab000)

So far so good.

But then I checked the platform plugins dependencies:

# ldd libqeglfs.so 
ldd: warning: you do not have execution permission for `./libqeglfs.so`
libQt5EglDeviceIntegration.so.5 => not found
libQt5Gui.so.5 => not found
libQt5Core.so.5 => not found
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x76e27000)
libc.so.6 => /lib/libc.so.6 (0x76ced000)
libm.so.6 => /lib/libm.so.6 (0x76c6f000)
/lib/ld-linux-armhf.so.3 (0x54ac5000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x76c43000)

ldd libqeglfs-viv-integration.so shows the same.

Could be that the problem? How I fix it?

Update:

I tried the first approach of deploying, putting libs and plugins in /usr/lib.
libqeglfs.so and libqeglfs-viv-integration.so now can find their dependencies, but the error persists.

aV_V · wrote on 17 Nov 2016, 14:05

Solved. I don't know how exactly, because I tried many things altogether, so I will try to find what was the real problem. It's very probable because of the missing touchscreen driver.

Update:

At first I solved it unintentionally installing qtbase-examples (I was expecting there would be binaries ready to run, but it was source code) and the package manager installed the needed dependencies too. Then I remove it and discovered what dependencies were these that made my helloworld to work:

kernel-module-imx-gpu-viv
libgles2-mx6
libegl-mx6

hflw · 23 Jan 2017, 16:07

@aV_V hi,i have the same problem ,You remove
kernel-module-imx-gpu-viv
libgles2-mx6
libegl-mx6

,and then work,Please how to remove? use "opkg remove"?

aV_V · H hflw 20 Jan 2017, 05:11

@hflw No no, I dont remove them. I added those missing packages. Actually, this package: kernel-module-imx-gpu-viv, which is the gpu driver, it wasn't missing, I had it as a built-in module. So check ur kernel configuration and make sure u have enabled the gpu driver.
Then u need to have installed the EGL libraries compiled for ur platform. On my case are libgles2-mx6 and libegl-mx6.

Tell me more about ur platform and what Yocto setup are u using and I could help u better if that wasn't enough.

Regards.

hflw · 24 Jan 2017, 16:15

hi @aV_V ,my board info:

cpu:imx6dl
yocto:jethro
kernel:3.10.17
qt: 5.7.1 (build based on Yocto Jethro)

the below is the kernel start complete info and qt program running info:


U-Boot 2014.04-gb0af01b-dirty (Mar 09 2015 - 18:41:02)

CPU:   Freescale i.MX6DL rev1.1 at 792 MHz
CPU:   Temperature 34 C, calibration data: 0x5874fc69
Reset cause: POR
Board: MX6-Sabreauto revA
I2C:   ready
DRAM:  1 GiB
NAND:  1024 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
No panel detected: default to Hannstar-XGA
Display: Hannstar-XGA (1024x768)
In:    serial
Out:   serial
Err:   serial
Found PFUZE100! deviceid=10,revid=21
Net:   Phy not found
PHY reset timed out
FEC [PRIME]
Warning: failed to set MAC address

Normal Boot
Hit any key to stop autoboot:  0 

NAND read: device 0 offset 0x1000000, size 0x800000
 8388608 bytes read: OK

NAND read: device 0 offset 0x2000000, size 0x100000
 1048576 bytes read: OK
Kernel image @ 0x12000000 [ 0x000000 - 0x53f8f8 ]
## Flattened Device Tree blob at 18000000
   Booting using the fdt blob at 0x18000000
   Using Device Tree in place at 18000000, end 1800d88c

Starting kernel ...

Booting Linux on physical CPU 0x0
Linux version 3.10.17-80743-g257896a-dirty (hflw@ubuntu) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46 SMP PREEMPT Tue Jan 17 23:58:01 CST 2017
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX6 Quad/DualLite (Device Tree), model: Freescale i.MX6 DualLite/Solo BLURR Board
cma: CMA: reserved 320 MiB at 3c000000
Memory policy: ECC disabled, Data cache writealloc
PERCPU: Embedded 8 pages/cpu @8155f000 s8896 r8192 d15680 u32768
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 260096
Kernel command line: console=ttymxc3,115200 ubi.mtd=3 root=ubi0:rootfs rootfstype=ubifs mtdparts=gpmi-nand:16m(boot),16m(kernel),16m(dtb),-(rootfs) video=mxcfb0:dev=ldb,LDB-XGA,if=RGB666 ldb=sin0
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1024MB = 1024MB total
Memory: 697456k/697456k available, 351120k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xc0800000 - 0xff000000   (1000 MB)
    lowmem  : 0x80000000 - 0xc0000000   (1024 MB)
    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
    modules : 0x7f000000 - 0x7fe00000   (  14 MB)
      .text : 0x80008000 - 0x80c46c58   (12540 kB)
      .init : 0x80c47000 - 0x80c8b2c0   ( 273 kB)
      .data : 0x80c8c000 - 0x80cdf240   ( 333 kB)
       .bss : 0x80cdf240 - 0x80d48714   ( 422 kB)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
Preemptible hierarchical RCU implementation.
	RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
NR_IRQS:16 nr_irqs:16 16
L310 cache controller enabled
l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x32050000, Cache size: 524288 B
sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
CPU identified as i.MX6DL, silicon rev 1.1
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x8065e210 - 0x8065e268
CPU1: Booted secondary processor
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (3162.11 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
regulator-dummy: no parameters
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
Use WDOG1 as reset source
syscon 20c8000.anatop: regmap [mem 0x020c8000-0x020c8fff] registered
vdd1p1: 800 <--> 1375 mV at 1125 mV 
vdd3p0: 2800 <--> 3150 mV at 3000 mV 
vdd2p5: 2000 <--> 2750 mV at 2425 mV 
cpu: 725 <--> 1450 mV at 1150 mV 
vddpu: 725 <--> 1450 mV 
vddsoc: 725 <--> 1450 mV at 1175 mV 
syscon 20e0000.iomuxc-gpr: regmap [mem 0x020e0000-0x020e0037] registered
syscon 21bc000.ocotp-ctrl: regmap [mem 0x021bc000-0x021bffff] registered
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
imx6dl-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
bio: create slab <bio-0> at 0
mxs-dma 110000.dma-apbh: initialized
usb_h1_vbus: 5000 mV 
usb_otg_vbus: 5000 mV 
3P3V: 3300 mV 
i2c-core: driver [max17135] using legacy suspend method
i2c-core: driver [max17135] using legacy resume method
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
i2c i2c-0: IMX I2C adapter registered
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
imx-ipuv3 2400000.ipu: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)
mxc_mipi_csi2 21dc000.mipi_csi: i.MX MIPI CSI2 driver probed
mxc_mipi_csi2 21dc000.mipi_csi: i.MX MIPI CSI2 dphy version is 0x3130302a
MIPI CSI2 driver module loaded
Advanced Linux Sound Architecture Driver Initialized.
cfg80211: Calling CRDA to update world regulatory domain
Switching to clocksource mxc_timer1
NET: Registered protocol family 2
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP: reno registered
UDP hash table entries: 512 (order: 2, 16384 bytes)
UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
pureg-dummy: no parameters
Bus freq driver module loaded
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
fuse init (API version 7.22)
msgmni has been set to 2002
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
imx-weim 21b8000.weim: WEIM driver registered.
MIPI DSI driver module loaded
mxc_sdc_fb fb.21: register mxc display driver ldb
mxc_ldb 20e0000.ldb: change IPU DI1 to IPU DI0 for LDB channel0.
imx-ipuv3 2400000.ipu: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)
Console: switching to colour frame buffer device 128x48
mxc_sdc_fb fb.22: register mxc display driver hdmi
mxc_sdc_fb fb.22: NO mxc display driver found!
imx_epdc_fb 20f4000.epdc: can't get/select pinctrl
imx-sdma 20ec000.sdma: no iram assigned, using external mem
imx-sdma 20ec000.sdma: loaded firmware 1.1
imx-sdma 20ec000.sdma: initialized
Serial: IMX driver
21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 61) is a IMX
console [ttymxc3] enabled
serial: Freescale lpuart driver
[drm] Initialized drm 1.1.0 20060810
[drm] Initialized vivante 1.0.0 20120216 on minor 0
brd: module loaded
loop: module loaded
nand: device found, Manufacturer ID: 0x01, Chip ID: 0xd3
nand: AMD/Spansion S34ML08G2
nand: 1024MiB, SLC, page size: 2048, OOB size: 128
gpmi-nand 112000.gpmi-nand: enable the asynchronous EDO mode 4
Scanning device for bad blocks
4 cmdlinepart partitions found on MTD device gpmi-nand
Creating 4 MTD partitions on "gpmi-nand":
0x000000000000-0x000001000000 : "boot"
0x000001000000-0x000002000000 : "kernel"
0x000002000000-0x000003000000 : "dtb"
0x000003000000-0x000040000000 : "rootfs"
gpmi-nand 112000.gpmi-nand: driver registered.
spi_imx 2010000.ecspi: probed
CAN device driver interface
flexcan 2090000.can: device registered (reg_base=c09b0000, irq=142)
fec 2188000.ethernet (unregistered net_device): Invalid MAC address: 00:00:00:00:00:00
fec 2188000.ethernet (unregistered net_device): Using random MAC address: ee:3a:44:25:3f:b9
libphy: fec_enet_mii_bus: probed
fec 2188000.ethernet eth0: registered PHC device 0
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver net1080
usbcore: registered new interface driver rndis_host
usbcore: registered new interface driver zaurus
usbcore: registered new interface driver cdc_ncm
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
usbcore: registered new interface driver cdc_wdm
usbcore: registered new interface driver usb-storage
usbcore: registered new interface driver ums-realtek
ci_hdrc ci_hdrc.1: doesn't support gadget
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
mousedev: PS/2 mouse device common for all mice
input: eGalax Touch Screen as /devices/soc0/soc.1/2100000.aips-bus/21a0000.i2c/i2c-0/0-0004/input/input0
i2c-core: driver [isl29023] using legacy suspend method
i2c-core: driver [isl29023] using legacy resume method
snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc0
i2c /dev entries driver
mxc_v4l2_output v4l2_out.25: V4L2 device registered as video16
mxc_v4l2_output v4l2_out.25: V4L2 device registered as video17
i2c-core: driver [mag3110] using legacy suspend method
i2c-core: driver [mag3110] using legacy resume method
imx2-wdt 20bc000.wdog: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0)
cpuidle: using governor ladder
cpuidle: using governor menu
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: no vqmmc regulator found
mmc0: no vmmc regulator found
mmc0: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
usb 1-1: new high-speed USB device number 2 using ci_hdrc
Galcore version 4.6.9.9754
mxc_vdoa 21e4000.vdoa: i.MX Video Data Order Adapter(VDOA) driver probed
mxc_vpu 2040000.vpu: VPU initialized
caam 2100000.caam: device ID = 0x0a16010000000100 (Era -524)
caam 2100000.caam: job rings = 2, qi = 0
caam 2100000.caam: authenc-hmac-md5-cbc-aes-caam
caam 2100000.caam: authencesn-hmac-md5-cbc-aes-caam
caam 2100000.caam: authenc-hmac-sha1-cbc-aes-caam
caam 2100000.caam: authencesn-hmac-sha1-cbc-aes-caam
caam 2100000.caam: authenc-hmac-sha224-cbc-aes-caam
caam 2100000.caam: authencesn-hmac-sha224-cbc-aes-caam
caam 2100000.caam: authenc-hmac-sha256-cbc-aes-caam
caam 2100000.caam: authencesn-hmac-sha256-cbc-aes-caam
caam 2100000.caam: authenc-hmac-md5-cbc-des3_ede-caam
caam 2100000.caam: authencesn-hmac-md5-cbc-des3_ede-caam
caam 2100000.caam: authenc-hmac-sha1-cbc-des3_ede-caam
caam 2100000.caam: authencesn-hmac-sha1-cbc-des3_ede-caam
caam 2100000.caam: authenc-hmac-sha224-cbc-des3_ede-caam
caam 2100000.caam: authencesn-hmac-sha224-cbc-des3_ede-caam
caam 2100000.caam: authenc-hmac-sha256-cbc-des3_ede-caam
caam 2100000.caam: authencesn-hmac-sha256-cbc-des3_ede-caam
caam 2100000.caam: authenc-hmac-md5-cbc-des-caam
caam 2100000.caam: authencesn-hmac-md5-cbc-des-caam
caam 2100000.caam: authenc-hmac-sha1-cbc-des-caam
caam 2100000.caam: authencesn-hmac-sha1-cbc-des-caam
caam 2100000.caam: authenc-hmac-sha224-cbc-des-caam
caam 2100000.caam: authencesn-hmac-sha224-cbc-des-caam
caam 2100000.caam: authenc-hmac-sha256-cbc-des-caam
caam 2100000.caam: authencesn-hmac-sha256-cbc-des-caam
caam 2100000.caam: ecb-des-caam
caam 2100000.caam: ecb-arc4-caam
caam 2100000.caam: ecb-aes-caam
caam 2100000.caam: ctr-aes-caam
caam 2100000.caam: cbc-aes-caam
caam 2100000.caam: ecb-des3-caam
caam 2100000.caam: cbc-3des-caam
caam 2100000.caam: cbc-des-caam
caam 2100000.caam: fsl,sec-v4.0 algorithms registered in /proc/crypto
platform 2101000.jr0: registering rng-caam
platform caam_sm: caam_sm_test: 8-byte key test match OK
platform caam_sm: caam_sm_test: 16-byte key test match OK
platform caam_sm: caam_sm_test: 32-byte key test match OK
platform caam_secvio.32: security violation service handlers armed
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
i2c-core: driver [cs42888] using legacy suspend method
i2c-core: driver [cs42888] using legacy resume method
fsl-hdmi-dai hdmi_audio.16: failed to probe. Load HDMI-video first.
fsl-hdmi-dai: probe of hdmi_audio.16 failed with error -12
sgtl5000 0-000a: Device with ID register ffff is not a sgtl5000
sgtl5000 0-000a: ASoC: failed to probe CODEC -19
imx-sgtl5000 sound.30: ASoC: failed to instantiate card -19
imx-sgtl5000 sound.30: snd_soc_register_card failed (-19)
imx-audio-hdmi sound-hdmi.31: initialize HDMI-audio failed. load HDMI-video first!
NET: Registered protocol family 26
TCP: cubic registered
NET: Registered protocol family 10
mip6: Mobile IPv6
sit: IPv6 over IPv4 tunneling driver
ip6_gre: GRE over IPv6 tunneling driver
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
8021q: 802.1Q VLAN Support v1.8
lib80211: common routines for IEEE802.11 drivers
Key type dns_resolver registered
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
UBI: attaching mtd3 to ubi0
UBI: scanning is finished
UBI: attached mtd3 (name "rootfs", size 976 MiB) to ubi0
UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
UBI: good PEBs: 7808, bad PEBs: 0, corrupted PEBs: 0
UBI: user volume: 1, internal volumes: 1, max. volumes count: 128
UBI: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 163028930
UBI: available PEBs: 556, total reserved PEBs: 7252, PEBs reserved for bad PEB handling: 160
UBI: background thread "ubi_bgt0d" started, PID 126
console [netcon0] enabled
netconsole: network logging started
input: gpio-keys.19 as /devices/soc0/gpio-keys.19/input/input1
snvs_rtc 20cc034.snvs-rtc-lp: setting system clock to 1970-01-01 00:00:03 UTC (3)
ALSA device list:
  No soundcards found.
UBIFS: recovery needed
UBIFS: recovery deferred
UBIFS: mounted UBI device 0, volume 0, name "rootfs", R/O mode
UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
UBIFS: FS size: 897847296 bytes (856 MiB, 7071 LEBs), journal size 33521664 bytes (31 MiB, 264 LEBs)
UBIFS: reserved for root: 4952683 bytes (4836 KiB)
UBIFS: media format: w4/r0 (latest is w4/r0), UUID 088785C7-9C8C-47E7-B788-5DCD0D7968DE, small LPT model
VFS: Mounted root (ubifs filesystem) readonly on device 0:11.
devtmpfs: mounted
Freeing unused kernel memory: 272K (80c47000 - 80c8b000)
systemd[1]: systemd 225 running in system mode. (-PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
systemd[1]: Detected architecture arm.

Welcome to Boot to Qt for Embedded Linux 2.0.2 (jethro)!

systemd[1]: Set hostname to <b2qt-imx6dlsabresd>.
systemd[1]: Reached target Swap.
[  OK  ] Reached target Swap.
systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Started Forward Password Requests to Wall Directory Watch.
systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Started Dispatch Password Requests to Console Directory Watch.
systemd[1]: Reached target Paths.
[  OK  ] Reached target Paths.
systemd[1]: Created slice Root Slice.
[  OK  ] Created slice Root Slice.
systemd[1]: Created slice User and Session Slice.
[  OK  ] Created slice User and Session Slice.
systemd[1]: Listening on udev Control Socket.
[  OK  ] Listening on udev Control Socket.
systemd[1]: Listening on udev Kernel Socket.
[  OK  ] Listening on udev Kernel Socket.
systemd[1]: Listening on Journal Socket (/dev/log).
[  OK  ] Listening on Journal Socket (/dev/log).
systemd[1]: Created slice System Slice.
[  OK  ] Created slice System Slice.
systemd[1]: Created slice system-serial\x2dgetty.slice.
[  OK  ] Created slice system-serial\x2dgetty.slice.
systemd[1]: Listening on Journal Socket.
[  OK  ] Listening on Journal Socket.
systemd[1]: Starting File System Check on Root Device...
         Starting File System Check on Root Device...
systemd[1]: Starting Setup Virtual Console...
         Starting Setup Virtual Console...
systemd[1]: Mounting Temporary Directory...
         Mounting Temporary Directory...
systemd[1]: Mounting Debug File System...
         Mounting Debug File System...
systemd[1]: Starting Load Kernel Modules...
         Starting Load Kernel Modules...
systemd[1]: Reached target Slices.
[  OK  ] Reached target Slices.
systemd[1]: Listening on Syslog Socket.
[  OK  ] Listening on Syslog Socket.
systemd[1]: Starting Journal Service...
         Starting Journal Service...
systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[  OK  ] Listening on /dev/initctl Compatibility Named Pipe.
systemd[1]: Mounted Debug File System.
[  OK  ] Mounted Debug File System.
systemd[1]: Mounted Temporary Directory.
[  OK  ] Mounted Temporary Directory.
systemd[1]: Started File System Check on Root Device.
[  OK  ] Started File System Check on Root Device.
systemd[1]: Started Setup Virtual Console.
[  OK  ] Started Setup Virtual Console.
systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: Failed to start Load Kernel Modules.
[FAILED] Failed to start Load Kernel Modules.
See 'systemctl status systemd-modules-load.service' for details.
systemd[1]: systemd-modules-load.service: Unit entered failed state.
systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.
systemd[1]: Started Journal Service.
[  OK  ] Started Journal Service.
         Mounting FUSE Control File System...
         Starting Apply Kernel Variables...
         Starting Remount Root and Kernel File Systems...
[  OK  ] Mounted FUSE Control File System.
[  OK  ] Started Apply Kernel Variables.
UBIFS: completing deferred recovery
UBIFS: background thread "ubifs_bgt0_0" started, PID 161
UBIFS: deferred recovery completed
[  OK  ] Started Remount Root and Kernel File Systems.
         Starting udev Coldplug all Devices...
         Starting Create Static Device Nodes in /dev...
         Starting Flush Journal to Persistent Storage...
[  OK  ] Started Create Static Device Nodes in /dev.
systemd-journald[149]: Received request to flush runtime journal from PID 1
[  OK  ] Reached target Local File Systems (Pre).
         Mounting /var/volatile...
         Starting udev Kernel Device Manager...
[  OK  ] Mounted /var/volatile.
[  OK  ] Started Flush Journal to Persistent Storage.
[  OK  ] Started udev Kernel Device Manager.
[  OK  ] Reached target Local File Systems.
         Starting Create Volatile Files and Directories...
         Starting Load/Save Random Seed...
[  OK  ] Started Create Volatile Files and Directories.
[  OK  ] Started Load/Save Random Seed.
[  OK  ] Started udev Coldplug all Devices.
         Starting Network Time Synchronization...
         Starting Update UTMP about System Boot/Shutdown...
[  OK  ] Started Update UTMP about System Boot/Shutdown.
[  OK  ] Started Network Time Synchronization.
[  OK  ] Created slice system-systemd\x2dbacklight.slice.
         Starting Load/Save Screen Backlight...ess of backlight:backlight.18...
[  OK  ] Reached target System Time Synchronized.
[  OK  ] Started Load/Save Screen Backlight ...tness of backlight:backlight.18.
[  OK  ] Reached target System Initialization.
[  OK  ] Listening on dropbear.socket.
[  OK  ] Listening on RPCbind Server Activation Socket.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timers.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Reached target Sockets.
[  OK  ] Reached target Basic System.
[  OK  ] Started Kernel Logging Service.
         Starting Login Service...
[  OK  ] Started B2Qt Launcher Demo.
[  OK  ] Started System Logging Service.
[  OK  ] Started D-Bus System Message Bus.
         Starting D-BUS Session Message Bus....
         Starting Connection service...
         Starting Restore Sound Card State...
[  OK  ] Found device /dev/ttymxc3.
[  OK  ] Started Login Service.
[  OK  ] Started Serial Getty on ttymxc3.
[  OK  ] Started Restore Sound Card State.
[  OK  ] Started Connection service.
[  OK  ] Reached target Network.
         Starting ADB Server Daemon...
         Starting Network Time Service...
[  OK  ] Reached target Remote File Systems (Pre).
[  OK  ] Reached target Remote File Systems.
[  OK  ] Started D-BUS Session Message Bus..
         Starting WPA supplicant...
         Starting Hostname Service...
fec 2188000.ethernet eth0: no PHY, assuming direct connection to switch
libphy: PHY fixed-0:00 not found
fec 2188000.ethernet eth0: could not attach to PHY
[FAILED] Failed to start Hostname Service.
See 'systemctl status systemd-hostnamed.service' for details.
[  OK  ] Started ADB Server Daemon.
[  OK  ] Started Network Time Service.
[  OK  ] Started WPA supplicant.

Boot to Qt for Embedded Linux 2.0.2 b2qt-imx6dlsabresd ttymxc3

b2qt-imx6dlsabresd login: root
root@b2qt-imx6dlsabresd:~# ls
8192cu.ko     Accel	    cal      qmlDemoquick1  wpa_supplicant.conf
8192cu_hf.ko  auto_wifi.sh  qmlDemo  untitled
root@b2qt-imx6dlsabresd:~# ./untitled -platform linuxfb
^Croot@b2qt-imx6dlsabresd:~# ./untitled -platform eglfs  
QEglFSVivIntegration will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.
 If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Could not open egl display
Aborted
root@b2qt-imx6dlsabresd:~# ./qmlDemo -platform linuxfb
This plugin does not support createPlatformOpenGLContext!
Failed to create OpenGL context for format QSurfaceFormat(version 2.0, options QFlags(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior 2, swapInterval 1, profile  0) 
Aborted
root@b2qt-imx6dlsabresd:~# ./qmlDemo -platform eglfs  
QEglFSVivIntegration will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.
 If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Could not open egl display
Aborted
root@b2qt-imx6dlsabresd:~#

the above,qt program untitled is based on widget and qmlDemo based on qml.

I try to build the Yocto Krogoth,and the error is the same.the link of post is:

Qt5.8 for arm:Could not open egl display

about the kernel configuration,I think the kernel is OK,because I had successful run the qt5.3(platform eglfs) program build on Yocto Dizzy,I checked the kernel cfg MXC_GPU is y

so How to check step by step？I am confused.Thanks in advance！！！

aV_V · H hflw 24 Jan 2017, 15:48

@hflw Just use menuconfig and search for vivante. If you have set CONFIG_MXC_GPU_VIV then is OK.
Try to rebuild ur yocto image adding these packages:

libgal-mx6 \
libegl-mx6 \
libvsc-mx6 \
libglslc-mx6 \
libgles2-mx6 \

And don't forget to add opengl distro feature (on local.conf)

DISTRO_FEATURES_append = " opengl"

Is your yocto image console only? If so, do also:

DISTRO_FEATURES_remove = "x11 wayland"

Btw, that linux kernel is quite old, I don't know if that could be the main problem.

hflw · 30 Jan 2017, 11:53

@aV_V ，I add the below config on local.conf


DISTRO_FEATURES_remove = "x11 wayland"

DISTRO_FEATURES_append = " opengl"

IMAGE_INSTALL_append = " \
        libgal-mx6 \
        libegl-mx6 \
        libvsc-mx6 \
        libglslc-mx6 \
        libgles2-mx6 \
"

But the error still exists,So I decide to update kernel to Version 3.14(jethro used).

aV_V · 31 Jan 2017, 09:24

@hflw It worked with kernel 3.14?

hflw · 1 Feb 2017, 09:39

@aV_V hi,I have updated the kernel to Version 3.14,But the error still exists.

Can u show me your kernel .config file? and what is your kernel Version?

aV_V · H hflw 31 Jan 2017, 09:24

@hflw I continue on ur thread that u've
created https://forum.qt.io/topic/75316/qt5-8-for-arm-could-not-open-egl-display