[Ice Lake] 2-second black screen blips when using Chrome or gnome-screenshot in kernel 5.4, but 5.5.19 has no problem

[Louisa Brown]

Hi,

Im using a HP 14s dq laptop with intel 630 graphics.

I've tried both the mode setting and xserver-xorg-video-intel drivers, both result in the same 2-second black screen blips. The happens frequently using chrome, and always when using the gnome screenshot utility. Also, during boot teh screen flickers between black screen and boot splash a lot.

setting nomodeset as a grub parameter stops the flickering, but is not a feasible solution as brightness can no longer be set.

kind regards,

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-25.29-generic 5.4.30
Uname: Linux 5.4.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 21 08:15:51 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
 rtl8821ce, 5.5.2.1, 5.4.0-21-generic, x86_64: installed
 rtl8821ce, 5.5.2.1, 5.4.0-24-generic, x86_64: installed
 rtl8821ce, 5.5.2.1, 5.4.0-25-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Device [8086:8a56] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:86c8]
InstallationDate: Installed on 2020-04-16 (4 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 0408:5365 Quanta Computer, Inc. HP TrueVision HD Camera
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
 /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 10000M
 /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
     |__ Port 3: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
     |__ Port 3: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
MachineType: HP HP Laptop 14s-dq1xxx
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-25-generic root=UUID=54a7cc42-ac04-4466-b29f-16b1a7016ed0 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/20/2019
dmi.bios.vendor: AMI
dmi.bios.version: F.09
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 86C8
dmi.board.vendor: HP
dmi.board.version: 56.31
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAMI:bvrF.09:bd12/20/2019:svnHP:pnHPLaptop14s-dq1xxx:pvr:rvnHP:rn86C8:rvr56.31:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 14s-dq1xxx
dmi.product.sku: 8BL04EA#ABH
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
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 N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

Please stick with the 'modeset' driver, that's more modern than 'intel'.

Does the problem occur if you select 'Ubuntu on Wayland' from the login screen?

[Daniel van Vugt (vanvugt)]

See also bug 1873587.

[Daniel van Vugt (vanvugt)]

Please also open a Terminal window and run:

  dmesg -w

Now reproduce the black screen blips again. Do you see any new messages in the Terminal window when they occurred?

[Louisa Brown (louisa87)]

Hi Daniel,

In Response:
#2: I see the same problems in wayland and xorg.
#4: Reproducing the bug, results in no new messages.

[Louisa Brown (louisa87)]

Yes, seems very similar to bug 1873587 with regards boot, but also bug 1873594 regarding post-boot blips.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Louisa Brown (louisa87)]

Hi,

Worth noting for other people who experience this bug, that using mainline kernel 5.5.19 seems to fix the problem.

[Christopher Chafin (chrischafin97)]

I have the same exact problem, on Kubuntu 20.04 with Dell XPS 13 9300, using another kernel does fix it, but I have no wifi as a result and couldn't seem to solve that myself.

[Christopher Chafin (chrischafin97)]

I just wanted to update that updating the bios for my laptop (Dell XPS 13 9300) fixed the issue without needing a different kernel.