Hello everybody,
I'm using a laptop which is a Dell Latitude E6540 with hybrid graphics:
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mars XTX [Radeon HD 8790M] (rev ff)
The distribution is Ubuntu 18.04.2 LTS with HWE kernel 4.18.0-25-generic and HWE XServer packages. However, the problem described below showed up with the standard kernel as well.
Kernel modules amdgpu, radeon, i915 are loaded.
From time to time, I suspend the laptop and switch from using the laptop's primary display only to using one or more connected external displays/projectors and back.
On resume, the window manager isn't started immediately. Instead, a lot of error messages are displayed on the console:
radeon 0000:01:00.0: failed VCE resume (-110).
[drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xFFFFFFFF)
[drm:atom_op_jump [radeon]] *ERROR* atombios stuck in loop for more than 5secs aborting
[drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing CF1C (len 62, WS 0, PS 0) @ 0xCF38
[drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing B67E (len 236, WS 4, PS 0) @ 0xB74B
[drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing B5DC (len 74, WS 0, PS 8) @ 0xB5E4
[drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
[drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
The error messages are also shown on connected projectors which is slightly annoying.
Mostly, after a minute or two the system resumes successfully with the window manager starting and all applications still running.
However, after more and more suspend/resume cycles the resume process takes longer and sometimes X11 will crash so that a new session has to be started.
Best regards,
Thomas
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=255880d2-46ce-4ad0-ae40-cbe8d6448bcb
InstallationDate: Installed on 2018-08-09 (357 days ago)
InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Latitude E6540
Package: linux (not installed)
ProcFB:
0 inteldrmfb
1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-25-generic root=UUID=6c1fe528-1808-4de4-8d6e-be8d7e796823 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.18.0-25.26~18.04.1-generic 4.18.20
RelatedPackageVersions:
linux-restricted-modules-4.18.0-25-generic N/A
linux-backports-modules-4.18.0-25-generic N/A
linux-firmware 1.173.9
Tags: bionic
Uname: Linux 4.18.0-25-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/18/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0725FP
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE6540:pvr01:rvnDellInc.:rn0725FP:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6540
dmi.product.sku: Latitude E6540
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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