Screen goes blank after login to Wayland session (Aspeed graphics)

[MichaelE]

Server with Aspeed built-in graphics system and driver ast. Used to work, but since a few weeks scfeen goes blank after login. Login screen with lightdm works only after boot.
User is logged in properly, just screen is left blank.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
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: Sat Jun 26 14:35:50 2021
DistUpgraded: ProcessLookupError: [Errno 3] Kein passender Prozess gefunden
DistroCodename: focal
DistroVariant: ubuntu
GraphicsCard:
 ASPEED Technology, Inc. ASPEED Graphics Family [1a03:2000] (rev 30) (prog-if 00 [VGA controller])
   Subsystem: Super Micro Computer Inc ASPEED Graphics Family [15d9:0895]
MachineType: Supermicro Super Server
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-5.8.0-59-generic root=UUID=ceb2127b-bad8-4e5a-a9bc-104bde7e6b93 ro rootflags=subvol=@ gfxpayload=true nomdmonddf nomdmonisw intel_iommu=on
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to focal on 2020-08-21 (308 days ago)
dmi.bios.date: 09/18/2020
dmi.bios.release: 5.12
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3.4
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X11SAE-F
dmi.board.vendor: Supermicro
dmi.board.version: 1.01
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 17
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.4:bd09/18/2020:br5.12:svnSupermicro:pnSuperServer:pvr0123456789:rvnSupermicro:rnX11SAE-F:rvr1.01:cvnSupermicro:ct17:cvr0123456789:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Super Server
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
version.compiz: compiz 1:0.9.14.1+20.04.20200211-0ubuntu1
version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.2.6-0ubuntu0.20.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
xserver.bootTime: Sat Jun 26 14:24:46 2021
xserver.configfile: default
xserver.errors:
 ast: module ABI major version (23) doesn't match the server's version (24)
 Failed to load module "ast" (module requirement mismatch, 0)
 ast: module ABI major version (23) doesn't match the server's version (24)
 Failed to load module "ast" (module requirement mismatch, 0)
 modeset(0): glamor initialization failed
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.20.9-2ubuntu1.2~20.04.2
xserver.video_driver: modeset

[MichaelE (michael-eitelwein)]

I am seeing error messages in the log that may have to do with the problem:

2021-06-26T13:52:58.075527+02:00 mothership systemd[32763]: Starting GNOME Shell on Wayland...
2021-06-26T13:52:58.222505+02:00 mothership gnome-shell[33029]: pci id for fd 9: 1a03:2000, driver (null)
2021-06-26T13:52:58.222634+02:00 mothership gnome-shell[33029]: MESA-LOADER: failed to open ast (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri)
2021-06-26T13:52:58.222679+02:00 mothership gnome-shell[33029]: failed to load driver: ast
2021-06-26T13:52:58.257536+02:00 mothership gnome-shell[33029]: Failed to initialize accelerated iGPU/dGPU framebuffer sharing: Do not want to use software renderer (llvmpipe (LLVM 11.0.0, 256 bits)), falling back to CPU copy path

[...]

2021-06-26T14:27:22.564213+02:00 mothership gnome-shell[23054]: Failed to initialize accelerated iGPU/dGPU framebuffer sharing: Do not want to use software renderer (llvmpipe (LLVM 11.0.0, 256 bits)), falling back to CPU copy path

[...]

2021-06-26T14:27:25.305014+02:00 mothership gnome-shell[23054]: Failed to post KMS update: drmModePageFlip on CRTC 33 failed: Nicht genügend Hauptspeicher verfügbar
2021-06-26T14:27:25.318910+02:00 mothership gnome-shell[23054]: GNOME Shell started at Sat Jun 26 2021 14:27:22 GMT+0200 (CEST)
2021-06-26T14:27:25.319761+02:00 mothership gnome-shell[23054]: Registering session with GDM

[Daniel van Vugt (vanvugt)]

The main issue appears to be:

> Failed to post KMS update: drmModePageFlip on CRTC 33 failed: Nicht genügend Hauptspeicher verfügbar

The messages before that are expected and not errors.

To avoid this problem you should be able to select 'Ubuntu' on the login screen, since it sounds like the problem is unique to the 'Ubuntu on Wayland' option.

[MichaelE (michael-eitelwein)]

Using "ubuntu" at log-in did not solve it.
A full power-cycle of the server did now resolve it. Before I did only reboots. Looks like the BMC/Aspeed required a full power off to reset properly.
Ticket can be closed, please.

[Daniel van Vugt (vanvugt)]

Oh, are you saying both Wayland and Xorg logins work now?

[MichaelE (michael-eitelwein)]

Xorg worked after a full power cycle again.
Wayland is still showing the issue and generating the error message of

gnome-shell 1856945 - - Failed to post KMS update: drmModePageFlip on CRTC 33 failed: Nicht genügend Hauptspeicher verfügbar

Let me know if you need me to do any further diagnostics.

Michael

[Daniel van Vugt (vanvugt)]

OK, that's what I expected. I suggest that error in Wayland sessions should be reported as a bug to upstream:

  https://gitlab.gnome.org/GNOME/mutter/-/issues