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crashes when monitor is turned off or turned on

Submitted by Valdas

Assigned to Nouveau Project

Link to original bug (#104698)

Description

Setup:

  • kubuntu 17.10;
  • kernel v4.13.0-25-generic;
  • plasma v5.11.5;
  • QT: 5.9.1;
  • video card NVIDIA GTX 1080Ti;
  • video driver: nouveau (v1.0.15-2);
  • primary monitor: BENQ connected through DisplayPort;
  • secondary monitor (smaller resolution): LG connected through HDMI->VGA converter;
  • secondary monitor is on the left of primary monitor;

Problem:
- if I turn off primary monitor when logged in then xorg crashes and login screen appears;
- if I turn on primary monitor after log on then xorg crashes and login screen appears;

After xorg crash I still can see picture (login screen) on secondary monitor.

Entries from kernel log (several crashes after I played with power button of primary monitor):

2018-01-19 10:21 usb 1-6 USB disconnect, device number 2
2018-01-19 10:21 nouveau 0000 6:00.0: disp: 0x00006541[0]: INIT_GENERIC_CONDITON: unknown 0x07
2018-01-19 10:21 show_signal_msg 10 callbacks suppressed
2018-01-19 10:21 kscreen_backend[1444]: segfault at 10 ip 00007ff3a9466968 sp 00007ffe1faae640 error 4 in KSC_XRandR.so[7ff3a944e000+21000]
2018-01-19 10:21 nouveau 0000 6:00.0: gr: FECS falcon already acquired by gr!
2018-01-19 10:21 nouveau 0000 6:00.0: gr: init failed, -16
2018-01-19 10:21 usb 1-6 new high-speed USB device number 3 using xhci_hcd
2018-01-19 10:21 usb 1-6 New USB device found, idVendor=05e3, idProduct=0608
2018-01-19 10:21 usb 1-6 New USB device strings: Mfr=0, Product=1, SerialNumber=0
2018-01-19 10:21 usb 1-6 Product: USB2.0 Hub
2018-01-19 10:21 hub 1-6 .0: USB hub found
2018-01-19 10:21 hub 1-6 .0: 4 ports detected
2018-01-19 10:22 kscreen_backend[3140]: segfault at 14 ip 00007f207d87ebb2 sp 00007ffd44f5efa0 error 4 in KSC_XRandR.so[7f207d86a000+21000]
2018-01-19 10:22 nouveau 0000 6:00.0: gr: FECS falcon already acquired by gr!
2018-01-19 10:22 nouveau 0000 6:00.0: gr: init failed, -16
2018-01-19 10:22 usb 1-6 USB disconnect, device number 3
2018-01-19 10:22 nouveau 0000 6:00.0: disp: 0x00006541[0]: INIT_GENERIC_CONDITON: unknown 0x07
2018-01-19 10:22 kscreen_backend[3455]: segfault at 10 ip 00007fb6d7df6968 sp 00007ffd1dd2c7c0 error 4 in KSC_XRandR.so[7fb6d7dde000+21000]
2018-01-19 10:22 nouveau 0000 6:00.0: gr: FECS falcon already acquired by gr!
2018-01-19 10:22 nouveau 0000 6:00.0: gr: init failed, -16
2018-01-19 10:23 usb 1-6 new high-speed USB device number 4 using xhci_hcd
2018-01-19 10:23 usb 1-6 New USB device found, idVendor=05e3, idProduct=0608
2018-01-19 10:23 usb 1-6 New USB device strings: Mfr=0, Product=1, SerialNumber=0
2018-01-19 10:23 usb 1-6 Product: USB2.0 Hub
2018-01-19 10:23 hub 1-6 .0: USB hub found
2018-01-19 10:23 hub 1-6 .0: 4 ports detected
2018-01-19 10:23 kscreen_backend[4005]: segfault at 14 ip 00007f9292aafbb2 sp 00007fffa169f410 error 4 in KSC_XRandR.so[7f9292a9b000+21000]
2018-01-19 10:23 nouveau 0000 6:00.0: gr: FECS falcon already acquired by gr!
2018-01-19 10:23 nouveau 0000 6:00.0: gr: init failed, -16
2018-01-19 10:23 nouveau 0000 6:00.0: gr: init failed, -16