Critical: [(null)] evdevmouse: could not read from input device (no such device)

[getgo]

Hi,

My application suddenly somehow in random occassion print Critical: [(null)] evdevmouse: could not read from input device (no such device) and resistive touch screen that behave as mouse in /dev/input/event0 couldn't work anymore unless i restart the application.

I have 3 questions :

• Why QT can't reload the input?
• How QT and evdev works? Based on what i know, QT only receive whatever evdev give, so it's not QT problem, but why if i restart the application it work again?
• Is there some way i can get the signal so the application able to restart it self?

Please kindly advise. thank you!

[SGaist]

Hi,

Did you check the kernel messages to see why the device disappear ?

[getgo]

Hi,

[167139.543452] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[167139.543552] usb 1-1.2: Product: LG TS2009F-USB
[167139.543561] usb 1-1.2: Manufacturer: Edamak
[167139.550276] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.0056/input/input85
[167139.551077] hid-generic 0003:16FD:D091.0056: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[167779.752593] usb 1-1.2: USB disconnect, device number 89
[167780.222048] usb 1-1.2: new full-speed USB device number 90 using dwc_otg
[167780.361938] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[167780.361954] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[167780.362039] usb 1-1.2: Product: LG TS2009F-USB
[167780.362048] usb 1-1.2: Manufacturer: Edamak
[167780.368588] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.0057/input/input86
[167780.369349] hid-generic 0003:16FD:D091.0057: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[167949.480568] usb 1-1.2: USB disconnect, device number 90
[167950.005785] usb 1-1.2: new full-speed USB device number 91 using dwc_otg
[167950.145691] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[167950.145755] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[167950.145765] usb 1-1.2: Product: LG TS2009F-USB
[167950.145774] usb 1-1.2: Manufacturer: Edamak
[167950.150931] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.0058/input/input87
[167950.151647] hid-generic 0003:16FD:D091.0058: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[168592.552690] usb 1-1.2: USB disconnect, device number 91
[168592.990538] usb 1-1.2: new full-speed USB device number 92 using dwc_otg
[168593.130510] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[168593.130524] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[168593.130534] usb 1-1.2: Product: LG TS2009F-USB
[168593.130543] usb 1-1.2: Manufacturer: Edamak
[168593.136974] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.0059/input/input88
[168593.137714] hid-generic 0003:16FD:D091.0059: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[168789.160592] usb 1-1.2: USB disconnect, device number 92
[168789.633985] usb 1-1.2: new full-speed USB device number 93 using dwc_otg
[168789.772695] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[168789.772712] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[168789.772722] usb 1-1.2: Product: LG TS2009F-USB
[168789.772731] usb 1-1.2: Manufacturer: Edamak
[168789.778173] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.005A/input/input89
[168789.778931] hid-generic 0003:16FD:D091.005A: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[169470.120568] usb 1-1.2: USB disconnect, device number 93
[169470.544676] usb 1-1.2: new full-speed USB device number 94 using dwc_otg
[169470.684565] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[169470.684580] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[169470.684675] usb 1-1.2: Product: LG TS2009F-USB
[169470.684685] usb 1-1.2: Manufacturer: Edamak
[169470.691307] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.005B/input/input90
[169470.692048] hid-generic 0003:16FD:D091.005B: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[170297.976148] usb 1-1.2: reset full-speed USB device number 94 using dwc_otg
[170471.875602] usb 1-1.2: reset full-speed USB device number 94 using dwc_otg
[171142.628230] usb 1-1.2: reset full-speed USB device number 94 using dwc_otg
[171334.568600] usb 1-1.2: USB disconnect, device number 94
[171335.119664] usb 1-1.2: new full-speed USB device number 95 using dwc_otg
[171335.259575] usb 1-1.2: New USB device found, idVendor=16fd, idProduct=d091, bcdDevice= 4.04
[171335.259645] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[171335.259655] usb 1-1.2: Product: LG TS2009F-USB
[171335.259665] usb 1-1.2: Manufacturer: Edamak
[171335.267232] input: Edamak LG TS2009F-USB as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:16FD:D091.005C/input/input91
[171335.267982] hid-generic 0003:16FD:D091.005C: input,hidraw0: USB HID v1.11 Mouse [Edamak LG TS2009F-USB] on usb-3f980000.usb-1.2/input0
[172217.529649] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[172910.829316] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[173080.891400] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[173750.519339] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[173942.721566] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[175531.215080] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[175702.796790] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[176562.443670] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[177250.205941] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[178343.752958] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[178911.073268] usb 1-1.3: reset high-speed USB device number 5 using dwc_otg
[178994.530648] Modules linked in: tun xt_conntrack ipt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat nft_chain_nat_ipv4 nf_nat_ipv4 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink br_netfilter bridge overlay bnep hci_uart btbcm serdev bluetooth ecdh_generic 8021q garp stp llc brcmfmac brcmutil joydev snd_usb_audio snd_hwdep sha256_generic uvcvideo snd_usbmidi_lib snd_rawmidi snd_seq_device cfg80211 rfkill snd_bcm2835(C) raspberrypi_hwmon hwmon snd_pcm snd_timer snd bcm2835_codec(C) bcm2835_v4l2(C) v4l2_mem2mem i2c_bcm2835 bcm2835_mmal_vchiq(C) videobuf2_dma_contig v4l2_common videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common vc_sm_cma(C) videodev media evdev uio_pdrv_genirq uio fixed i2c_dev ip_tables x_tables ipv6
[179219.388016] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg
[179901.528151] usb 1-1.2: reset full-speed USB device number 95 using dwc_otg

There's no why the device disconnected. Is there any way QT able to get the signal or re read from /dev/input/event0 again?

Thanks!

[SGaist]

Looks like there's a bug somewhere in the lower levels of your system.

Do you get the same result if you plug your mouse in another port ?
Do you get the same result if you plug a different mouse in the same port ?

You likely don't have that file available anymore when the device restarts, do you ?