Display Port issues - screen blackouts

Bug #1762989 reported by thet
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Medium
Unassigned

Bug Description

I use a Philips BDM4037U 40'', 4k monitor.
Connecting it via DP to my Lenovo 910 4k gives me random blackouts.

It appears to me that this mostly happens after some time of work, also more likely when the CPU has to handle more than average load, sooner in 30Hz than in 60Hz mode. But it happens for sure after some time, each day.

I was unsure if this is a problem with the monitor itself (although when connected via HDMI this isn't an issue).
I found similar bug reports for Windows, where it was suggested to update the firmware.
My laptop has updated everything - a current BIOS (which dates back to June 2017 or so), updated Windows, latest Ubuntu.
The same problem existed in 17.10, with x-org and Wayland sessions.

Note, there is another issue with this monitor filed by me, but unrelated AFAIK: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762986

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-13-generic 4.15.0-13.14 [modified: boot/vmlinuz-4.15.0-13-generic]
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: thet 1429 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 11 12:07:06 2018
HibernationDevice: RESUME=UUID=bedd1248-32dd-43ca-be9f-28337086ea86
InstallationDate: Installed on 2018-04-09 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
MachineType: LENOVO 80VF
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-13-generic.efi.signed root=UUID=998520ff-c841-45ab-8312-2bb876ae2a0b ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-13-generic N/A
 linux-backports-modules-4.15.0-13-generic N/A
 linux-firmware 1.173
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/31/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: 2JCN39WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Agera
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo YOGA 910-13IKB
dmi.modalias: dmi:bvnLENOVO:bvr2JCN39WW:bd05/31/2017:svnLENOVO:pn80VF:pvrLenovoYOGA910-13IKB:rvnLENOVO:rnAgera:rvrSDK0J40709WIN:cvnLENOVO:ct31:cvrLenovoYOGA910-13IKB:
dmi.product.family: IDEAPAD
dmi.product.name: 80VF
dmi.product.version: Lenovo YOGA 910-13IKB
dmi.sys.vendor: LENOVO

Revision history for this message
thet (thet) wrote :
Revision history for this message
thet (thet) wrote :
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16

Changed in linux (Ubuntu):
importance: Undecided → Medium
status: Confirmed → Incomplete
Revision history for this message
thet (thet) wrote :

I tried it with the latest 4.16 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16.3/ - it looks like the issue is gone with that kernel. I had no problems using my display so far.

tags: added: kernel-fixed-upstream
thet (thet)
Changed in linux (Ubuntu):
status: Incomplete → Invalid
status: Invalid → New
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
Revision history for this message
thet (thet) wrote :

Unattached from this bug being closed because of inactivity I tried again the DisplayPort adapter under kernel 4.17.3. That didn't work at all, screen blackouts blinking from the beginning.

Changed in linux (Ubuntu):
status: Expired → Incomplete
Revision history for this message
thet (thet) wrote :

If there is any more info I can provide, please let me know.

Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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