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 ?