drm:drm_atomic_helper_wait_for_dependencies flip_done timed out

[Darko Veberic]

every now an then the system freezes but eventually comes back to life. the boot process is especially slow, login greeter takes ages to come up and then, while there, needs some extra time to unfreeze and actually allow typing in the password.

the freeze can be easily reproduced each time when switching from graphics to console (with ctrl-alt-fN) and back. each time the dmesg gets also gets appended with the error messages that can be found in the attached text file.

is the workaround really to uninstall intel's xorg drivers?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libdrm-intel1 2.4.91-2
ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
Date: Mon Aug 27 20:03:14 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 0c) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Mobile GM965/GL960 Integrated Graphics Controller (primary) [17aa:383e]
   Subsystem: Lenovo Mobile GM965/GL960 Integrated Graphics Controller (secondary) [17aa:383e]
InstallationDate: Installed on 2018-08-24 (3 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: LENOVO 0769BJG
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=5c1b96ff-002e-4358-bf56-8dd74e76584d ro dis_ucode_ldr
SourcePackage: libdrm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/11/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 68ET37WW
dmi.board.name: IEL10
dmi.board.vendor: LENOVO
dmi.board.version: REFERENCE
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr68ET37WW:bd06/11/2008:svnLENOVO:pn0769BJG:pvr3000N200:rvnLENOVO:rnIEL10:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.family: Lenovo
dmi.product.name: 0769BJG
dmi.product.version: 3000 N200
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Darko Veberic (darko-veberic-kit)]

uninstalling the xserver-xorg-video-intel did not help. the output of tail -f /var/log/kern.log during the switch from graphics to linux console is in the attachment.

[Darko Veberic (darko-veberic-kit)]

the situation is the same after an upgrade to 18.10. the graphics freezes for about 25 seconds each time one switches from tty to graphical console or when lightdm/gdm starts. i am attaching the dmesg output where several such freezes can be seen. it's all related to a timeout in blanking the screen.

[Darko Veberic (darko-veberic-kit)]

the solution proposed in https://bugzilla.redhat.com/show_bug.cgi?id=1534300 and https://bugs.freedesktop.org/show_bug.cgi?id=93782 solved the problem. one should add

video=SVIDEO-1:d

to the kernel parameters, best in /etc/defaults/grub

[Darko Veberic (darko-veberic-kit)]

the same bug confirmed also on Acer TravelMate 6492 with Intel GM965/GL960 graphics running Ubuntu 16.04.5 LTS.

the kernel command-line option above fixes the problem.

[Darko Veberic (darko-veberic-kit)]

confirmed also on lenovo thinkpad r61 with ubuntu 16.04.5 lts

[Darko Veberic (darko-veberic-kit)]

could be a duplicate of bug #1685442