[Pkg-xfce-devel] Bug#838462: Bug#838462: light-locker: X crashes when attaching/removing displays while locked

[Frederik Möllers]

On 23/09/16 09:17, Yves-Alexis Perez wrote:
> If you have an intel card, try to use the modesetting driver instead
> of the xserver-xorg-video-intel one (just removing the package is
> enough, I think).

I tried that, but the error persists. Checking the X log gave some new
information, though:

[   316.532] (II) AIGLX: Suspending AIGLX clients for VT switch
[   331.694] (II) config/udev: Adding input device Logitech USB Laser Mouse (/dev/input/mouse2)
[   331.695] (II) No input driver specified, ignoring this device.
[   331.695] (II) This device may have been added with another device file.
[   331.727] (II) config/udev: Adding input device Logitech USB Keyboard (/dev/input/event19)
[   331.727] (**) Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[   331.727] (**) Logitech USB Keyboard: Applying InputClass "libinput keyboard catchall"
[   331.727] (II) Using input driver 'libinput' for 'Logitech USB Keyboard'
[   331.727] (**) Logitech USB Keyboard: always reports core events
[   331.727] (**) Option "Device" "/dev/input/event19"
[   331.727] (**) Option "_source" "server/udev"
[   331.728] (II) input device 'Logitech USB Keyboard', /dev/input/event19 is tagged by udev as: Keyboard
[   331.728] (II) input device 'Logitech USB Keyboard', /dev/input/event19 is a keyboard
[   331.748] (II) libinput: Logitech USB Keyboard: needs a virtual subdevice
[   331.748] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.4/2-3.4.2/2-3.4.2:1.1/0003:046D:C328.0003/input/input20/event19"
[   331.748] (II) XINPUT: Adding extended input device "Logitech USB Keyboard" (type: MOUSE, id 14)
[   331.748] (**) Option "AccelerationScheme" "none"
[   331.749] (**) Logitech USB Keyboard: (accel) selected scheme none/0
[   331.749] (**) Logitech USB Keyboard: (accel) acceleration factor: 2.000
[   331.749] (**) Logitech USB Keyboard: (accel) acceleration threshold: 4
[   331.749] (**) Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[   331.749] (**) Logitech USB Keyboard: Applying InputClass "libinput keyboard catchall"
[   331.749] (II) Using input driver 'libinput' for 'Logitech USB Keyboard'
[   331.749] (**) Logitech USB Keyboard: always reports core events
[   331.749] (**) Option "Device" "/dev/input/event19"
[   331.749] (**) Option "_source" "_driver/libinput"
[   331.749] (II) libinput: Logitech USB Keyboard: is a virtual subdevice
[   331.749] (EE)
[   331.749] (EE) Backtrace:
[   331.749] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4a) [0x562dd5a8401a]
[   331.749] (EE) 1: /usr/lib/xorg/Xorg (0x562dd58ca000+0x1be389) [0x562dd5a88389]
[   331.749] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f874b5a5000+0x33040) [0x7f874b5d8040]
[   331.749] (EE) 3: /usr/lib/x86_64-linux-gnu/libinput.so.10 (libinput_device_config_tap_get_finger_count+0x0) [0x7f8747122440]
[   331.749] (EE) 4: /usr/lib/xorg/modules/input/libinput_drv.so (0x7f8747370000+0x83ae) [0x7f87473783ae]
[   331.749] (EE) 5: /usr/lib/xorg/Xorg (0x562dd58ca000+0xa4202) [0x562dd596e202]
[   331.749] (EE) 6: /usr/lib/xorg/modules/input/libinput_drv.so (0x7f8747370000+0x67af) [0x7f87473767af]
[   331.749] (EE) 7: /usr/lib/xorg/Xorg (ProcessWorkQueue+0x21) [0x562dd5922ee1]
[   331.749] (EE) 8: /usr/lib/xorg/Xorg (WaitForSomething+0xac) [0x562dd5a80c3c]
[   331.749] (EE) 9: /usr/lib/xorg/Xorg (0x562dd58ca000+0x53e9e) [0x562dd591de9e]
[   331.749] (EE) 10: /usr/lib/xorg/Xorg (0x562dd58ca000+0x58073) [0x562dd5922073]
[   331.749] (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf1) [0x7f874b5c52b1]
[   331.749] (EE) 12: /usr/lib/xorg/Xorg (_start+0x2a) [0x562dd590bfea]
[   331.749] (EE)
[   331.749] (EE) Segmentation fault at address 0x40
[   331.749] (EE)
Fatal server error:
[   331.749] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   331.749] (EE)
[   331.749] (EE)
Please consult the The X.Org Foundation support
     at http://wiki.x.org
 for help.
[   331.749] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   331.749] (EE)
[   331.749] (EE) Server terminated with error (1). Closing log file.

It seems the error is related to the X input library rather than any
video drivers. I have confirmed that the X server does not crash if I
plug my mouse and keyboard out of my dock.
Sorry for the wrong assignment. Could you reassign the bug to the
xserver-xorg-input-libinput package? Or should I just file a new report
there?

Best,
Frederik