i915 - image flickering and image artifacts

[hetman]

forward from bug #1964035:

intel (i915) works but flickering image on screen on elements of plasma-desktop ans has some artifacts like lines on ALT+TAB panel.

On tty`s not notesed.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
Uname: Linux 5.16.12-051612-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 510.47.03 Mon Jan 24 22:58:54 UTC 2022
 GCC version: gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: KDE
CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted
Date: Tue Mar 8 11:56:00 2022
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus: nvidia, 510.47.03, 5.16.12-051612-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Device [8086:9a68] (rev 01) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:12eb]
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:12eb]
InstallationDate: Installed on 2022-02-28 (7 days ago)
InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: Micro-Star International Co., Ltd. Katana GF76 11UC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.16.12-051612-generic root=UUID=98fc789e-6997-4a4b-b741-da24a1b635ca ro quiet splash modprode.blacklist=nouveau video=SVIDEO-1:d i915.fastboot=1 snd_intel_dspcfg.dsp_driver=1 snd_hda_intel.dmic_detect=0 vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/13/2022
dmi.bios.release: 3.16
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: E17L2IMS.310
dmi.board.asset.tag: Default string
dmi.board.name: MS-17L2
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrE17L2IMS.310:bd01/13/2022:br3.16:svnMicro-StarInternationalCo.,Ltd.:pnKatanaGF7611UC:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-17L2:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:sku17L2.3:
dmi.product.family: GF
dmi.product.name: Katana GF76 11UC
dmi.product.sku: 17L2.3
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.107-8ubuntu1~20.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.6-0ubuntu0.1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.2
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

[Daniel van Vugt (vanvugt)]

Thanks for the bug report.

For the moment this sounds like a bug in KDE/Plasma, but in case it's a deeper issue please also attach a video of the screen while the bug is happening.

[Daniel van Vugt (vanvugt)]

Please also try an official Ubuntu kernel version instead of 5.16.12-051612-generic.

[Daniel van Vugt (vanvugt)]

Oh! I see the problem in XorgLog.txt and XorgLogOld.txt. You're using the old 'intel' driver so that makes it bug 1867668. Please uninstall it by:

  sudo apt remove xserver-xorg-video-intel

[hetman (hetman)]

an official Ubuntu kernel version (did your mean 5.4.0-42-generic ?) i have another problem - no sound i must update kernel to version 5.8 or newer for the device to work properly.
my probe:
https://linux-hardware.org/?probe=74bc866ab2

about "old 'intel' driver": I tried both old 'intel' and new 'i915' - the same problem

[Daniel van Vugt (vanvugt)]

The new Xorg driver is called 'modesetting': /usr/lib/xorg/modules/drivers/modesetting_drv.so

After you have uninstalled the 'intel' driver, if you still have graphics problems then please open a new bug by running:

  ubuntu-bug xorg

[hetman (hetman)]

I was not very accurate... in fact you are right the flickering is in the old driver 'intel'
i set i915
Section "Device"

        Identifier "Card0"
# Driver "i915"
        BusID "PCI:0:2:0"
# Identifier "Intel Graphics"
        Driver "i915"
# Option "AccelMethod" "uxa" # didn't work
# Option "AccelMethod" "sna"
        Option "AccelMethod" "glamor"
# Option "TearFree" "true"
# Option "no_accel" "no"
# Option "RenderAccel" "on"
# Option "Ignore" "true"
EndSection

 and I solved one problem and bought another: artifacts on scrolling pages (pixel shifting)

[hetman (hetman)]

I add options:

        Option "TearFree" "true"
        Option "TripleBuffer" "true"

artifacts remained, but they became smaller and not so annoying. I would say half measure.

[hetman (hetman)]

I was to do
`sudo apt remove xserver-xorg-video-intel`

and I do and now

[ 6925.959] (WW) Warning, couldn't open module i915
[ 6925.959] (EE) Failed to load module "i915" (module does not exist, 0)

and now it working on "modeset(0)"

[hetman (hetman)]

I was to do
`sudo apt remove xserver-xorg-video-intel`

and I do and now I have more artifacts with "modeset(0)" and without i915

[ 6925.959] (WW) Warning, couldn't open module i915
[ 6925.959] (EE) Failed to load module "i915" (module does not exist, 0)

https://drive.google.com/file/d/1L-2d6E0WuDm4Rs_idjL4_sPQ_fZuCo6T/view?usp=sharing

[hetman (hetman)]

if I to do `sudo apt remove xserver-xorg-video-intel` what it must to replace i915?

I try it after remove the driver the number of defects increased (artifacts disappeared slowly)

[Daniel van Vugt (vanvugt)]

You're confusing your kernel graphics driver for the Xorg graphics driver. They're not the same thing and you need both:

 * Kernel graphics driver = i915 (there is no other option and if you disable it then everything will break)
 * Xorg graphics driver = modesetting or intel

Once you have your system in a proper state with:

 * Kernel graphics driver = i915
 * Xorg graphics driver = modesetting

then please open new bugs for any remaining issues.