** Changed in: mutter (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1862081
Title:
Gnome resizes framebuffer when playing fullscreen video over and over
again (when using X11 fractional scaling)
Status in mutter package in Ubuntu:
Fix Committed
Bug description:
When I play a video with mpv (or e.g. Firefox), it works just fine.
When this video is fullscreened (e.g. in mpv by pressing f), the
screen quickly turns off, and switches resolution modes in such a rate
the screen is unusable.
The native resolution of the screen is 1440p, but Xorg somehow
increases the size to 3424x1926 for the fullscreen, then quickly
switches back to 1440p, before increasing it again.
As soon as the video is de-fullscreened (by pressing f again in mpv,
or esc in Firefox), the funny resolution switching stops and the
system is usable again.
This also happens with the modesetting 2d-driver. This does not happen
with Wayland.
This can be seen in the Xorg-log:
[ 20.215] (II) intel(0): EDID vendor "JDI", prod id 0
[ 20.215] (II) intel(0): Printing DDC gathered Modelines:
[ 20.215] (II) intel(0): Modeline "2560x1440"x0.0 245.12 2560 2608 2640
2720 1440 1443 1449 1502 +hsync -vsync (90.1 kHz eP)
[ 258.869] (II) intel(0): resizing framebuffer to 3424x1926
[ 258.905] (II) intel(0): switch to mode [email protected] on eDP1 using pipe
0, position (0, 0), rotation normal, reflection none
[ 268.955] (II) intel(0): resizing framebuffer to 2560x1440
[ 269.097] (II) intel(0): switch to mode [email protected] on eDP1 using pipe
0, position (0, 0), rotation normal, reflection none
[ 270.383] (II) intel(0): resizing framebuffer to 3424x1926
[ 270.400] (II) intel(0): switch to mode [email protected] on eDP1 using pipe
0, position (0, 0), rotation normal, reflection none
[ 271.852] (II) intel(0): resizing framebuffer to 2560x1440
[ 271.858] (II) intel(0): switch to mode [email protected] on eDP1 using pipe
0, position (0, 0), rotation normal, reflection none
[ 273.294] (II) intel(0): resizing framebuffer to 3424x1926
[ 273.314] (II) intel(0): switch to mode [email protected] on eDP1 using pipe
0, position (0, 0), rotation normal, reflection none
When the resolution is increased, the Kernel complains about the
framebuffer size:
[ 269.830034] [drm] Reducing the compressed framebuffer size. This
may lead to less power savings than a non-reduced-size. Try to
increase stolen memory size if available in BIOS.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu13
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
ApportVersion: 2.20.11-0ubuntu16
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Feb 6 00:00:07 2020
DistUpgraded: 2020-02-05 22:21:13,002 DEBUG Running PostInstallScript:
'./xorg_fix_proprietary.py'
DistroCodename: focal
DistroVariant: ubuntu
DpkgLog:
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Lenovo UHD Graphics 620 [17aa:2259]
MachineType: LENOVO 20LES01W00
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-12-generic
root=/dev/mapper/hostname-ubunturoot ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to focal on 2020-02-05 (0 days ago)
dmi.bios.date: 11/27/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N25ET52W (1.38 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20LES01W00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN25ET52W(1.38):bd11/27/2019:svnLENOVO:pn20LES01W00:pvrThinkPadX1Yoga3rd:rvnLENOVO:rn20LES01W00:rvrNotDefined:cvnLENOVO:ct31:cvrNone:
dmi.product.family: ThinkPad X1 Yoga 3rd
dmi.product.name: 20LES01W00
dmi.product.sku: LENOVO_MT_20LE_BU_Think_FM_ThinkPad X1 Yoga 3rd
dmi.product.version: ThinkPad X1 Yoga 3rd
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.100-4
version.libgl1-mesa-dri: libgl1-mesa-dri 19.3.3-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu1
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+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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