I sometimes get this vgaarb: this pci device is not a vga device in dmesg. The screen flashes a lot at boot, and at times I can booted into tty. Then I can ctrl+alt+f7 to get a desktop environment. Output of dmesg: http://paste.ubuntu.com/23381803/

Any guesses guys? similar problems https://chakralinux.org/bugtracker/index.php?do=details&task_id=1332 https://bbs.archlinux.org/viewtopic.php?id=216155

Other details:

  1. Output of lspci and /var/log/Xorg.0.log http://paste.ubuntu.com/23381786/ .
  2. Output of lshw http://paste.ubuntu.com/23381790/

VGA card:

$ lspci | grep VGA 
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07)

OS and kernel:

 ~  lsb_release -a
No LSB modules are available.
Distributor ID: neon
Description:    KDE neon User Edition 5.8
Release:        16.04
Codename:       xenial
 ~  uname -a
Linux neon 4.4.0-45-generic #66-Ubuntu SMP Wed Oct 19 14:12:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Since this might be related to nvidia:

~  dpkg -l | grep nvidia
ii  nvidia-361                                      361.42-0ubuntu2                            amd64        NVIDIA binary driver - version 361.42
ii  nvidia-opencl-icd-361                           361.42-0ubuntu2                            amd64        NVIDIA OpenCL ICD
ii  nvidia-prime                                    0.8.2                                      amd64        Tools to enable NVIDIA's Prime
ii  nvidia-settings                                 361.42-0ubuntu1                            amd64        Tool for configuring the NVIDIA graphics driver

EDIT: Running a few more times, sometimes it also shows me a segfault which may explain:

Error: 111.183169] sddm[980]: segfault at 40 ip 0000000000000040 sp 00007fff1f7f8b78 error 14 in sddm[400000+6f000]

Output of dmesg: http://paste.ubuntu.com/23386861/ Output of cat /var/log/Xorg.0.log: http://paste.ubuntu.com/23386867/

  • I have same error in dmesg on Xubuntu 16.10 but for me it boot normally and it crash after some time and I need to login again. Did you resolve the issue? – jcubic Apr 9 '17 at 15:56
  • I have the same message, and my laptop became headless - no tty either. However - lspci | grep -i VGA returns no lines. I guess this means I have a server now... – Tomasz Gandor Nov 2 '17 at 21:03

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