Braswell video locks up under gnome-shell [Failed to post KMS update: drmModePageFlip on CRTC 93 failed: No space left on device]

[Jerry Quinn]

I get a blank screen with a mouse cursor. Cursor doesn't respond to mouse inputs. System doesn't respond to keyboard inputs. I can still ssh in from another machine.

I see the following in the journal:

Jul 13 01:55:14 jenks gnome-shell[1403]: libinput error: client bug: timer event3 debounce: scheduled expiry is in the past (-442ms>
Jul 13 01:55:14 jenks gnome-shell[1403]: libinput error: client bug: timer event3 debounce short: scheduled expiry is in the past (>
Jul 13 01:57:07 jenks gnome-shell[1403]: Failed to post KMS update: drmModePageFlip on CRTC 93 failed: No space left on device

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.9-0ubuntu0.20.04.2
ProcVersionSignature: Ubuntu 5.8.0-59.66~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-59-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Jul 13 02:06:08 2021
DisplayManager: gdm3
InstallationDate: Installed on 2021-06-29 (14 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.36.9-0ubuntu0.20.04.1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Jerry Quinn (jlquinn)]

It seems to happen intermittently but when it does, I typically can't get back control at the console.

[Daniel van Vugt (vanvugt)]

> Failed to post KMS update: drmModePageFlip on CRTC 93 failed: No space left on device

Sounds relevant, although I've never seen that error come from a graphics driver.

[Daniel van Vugt (vanvugt)]

That error is from a Wayland session but you logged the bug from a Xorg session. Does the bug only occur in Wayland sessions?

Please also run:

  lspci -kv > lspci.txt

and attach the resulting text file here.

[Daniel van Vugt (vanvugt)]

Please also check for crashes using these instructions: https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment

[Jerry Quinn (jlquinn)]

Hi, there's a crash report mentioned on this page:

https://errors.ubuntu.com/user/241a8d330b8560e5d29b49b2d8df1a9340834364d1e9930a70caae16e29bf446d33032781384b132361e219d11002feddb39eb224ef4a8725b7f4651d988de57

but I don't have permission to follow the link to the actual crash report.

I originally tried using this box with X11, but I could lock up the screen regularly. So I tried running under wayland, which seems to be more stable for this machine. The above crash report is from kodi-wayland. When I look at what's running, I see Xwayland, which I assume is wayland running with the x layer on top?

When I log in after a restart (too many of them), I have gnome on wayland chosen.

[Daniel van Vugt (vanvugt)]

I mean the error at the top of this bug:

> Failed to post KMS update: drmModePageFlip on CRTC 93 failed: No space left on device

can only happen in Wayland sessions. So I assume this bug is about Wayland sessions only. If that is incorrect then let us know.

The crash report in comment #7 does not appear to be relevant.