Public bug reported:
[Description]
The drm_vram_helper crash when launching display manager with MGA G200e.
[Steps to reproduce]
0. Connect to a monitor via VGA
1. Install focal desktop image (5.4.0-21-generic)
2. Power on system and boot to multi-user.target
3. systemctl isolate graphical.target
[Expect result]
System launch GDM without problems
[Actual result]
System hang and monitor keep purple screen
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-40-generic 5.4.0-40.44
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
Date: Fri Jul 3 13:27:53 2020
InstallationDate: Installed on 2020-07-03 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Lenovo ThinkSystem ST250 -[7Y45CTO1WW]-
ProcFB: 0 mgag200drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic
root=UUID=68fd62d3-1204-4f51-a3b4-b35919882e7f ro
systemd.unit=multi-user.target quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-40-generic N/A
linux-backports-modules-5.4.0-40-generic N/A
linux-firmware 1.187
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/24/2020
dmi.bios.vendor: Lenovo
dmi.bios.version: -[ISE116D-2.10]-
dmi.board.asset.tag: none
dmi.board.name: -[7Y45CTO1WW]-
dmi.board.vendor: Lenovo
dmi.board.version: none
dmi.chassis.asset.tag: none
dmi.chassis.type: 7
dmi.chassis.vendor: Lenovo
dmi.chassis.version: none
dmi.modalias:
dmi:bvnLenovo:bvr-[ISE116D-2.10]-:bd04/24/2020:svnLenovo:pnThinkSystemST250-[7Y45CTO1WW]-:pvr03:rvnLenovo:rn-[7Y45CTO1WW]-:rvrnone:cvnLenovo:ct7:cvrnone:
dmi.product.family: ThinkSystem
dmi.product.name: ThinkSystem ST250 -[7Y45CTO1WW]-
dmi.product.sku: 7Y45CTO1WW
dmi.product.version: 03
dmi.sys.vendor: Lenovo
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1886140
Title:
drm_vram_helper crash when launching DM with MGA G200e
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