You have been subscribed to a public bug:
Opening Settings -> Display and selecting an orientation other than
Landscape doesn't work. Similarly, selecting Fractional Scaling and
then picking a scale factor has no effect.
This is a recently installed Ubuntu 20.04, fully updated, on a recently
released laptop/tablet that uses an AMD Ryzen 4500U integrated CPU/GPU.
It is possible that the GPU is not being detected by Ubuntu and that is
the root cause of the problem. I couldn't find an easy explanation
online about how to tell whether a GPU was detected or is in use. I did
try running "tlp-stat -g" to get graphics status, but it returns without
printing anything except its version number (1.3.1).
When I choose an orientation, such as Portrait Right, the setting
changes and an "Apply" button appears in the top of the Settings window.
When I press it, up pops up a dialog asking whether I want to "Keep
these display settings?" with two options, keep or revert. The rest of
the screen goes grey behind the dialog box, but I can already see behind
the popup that the screen did not change its orientation, and the
"Orientation" setting back in the Settings->Display window has been
reverted to "Landscape" without me doing it. Whether I choose keep or
revert, or merely let it time out after 20 seconds, the result remains
the same -- the display stays in Landscape mode and the setting that I
had made is reverted.
Regarding scaling, I can set the display scale to 100% (default) or
200%, successfully. But when I turn on the "Fractional Scaling" slider,
the graphics around the edge of the screen immediately increase in size
(the icons in the left-hand dock, the text in the top bar), even though
I have not changed the scale setting. I have included two screenshots
(original screen, and with Fractional Scaling on). There is also some
strangeness about whether sliding the Fractional Scaling slider updates
the Scale menu to allow more scales - sometimes it does, sometimes it
doesn't.
When I attempt to set a fractional scale such as 125%, the "Apply"
button appears in the upper right corner. When I press that, the
display does not actually scale, and a pop-up asks if I want to keep or
revert the setting. But looking back at the Displays settings, the
Scale has already reverted to 100% (as above with the Orientation).
Screenshot enclosed.
The display has been rock-solid before this, but now it started showing
artifacts, such as previous copies of the Displays window. I've
enclosed a screen shot, which shows checkerboard in the screen locations
that (in reality) were displaying prior versions of the window. Hmm,
examining that screenshot, it looks like the display DID start occupying
25% more space horizontally and vertically, but something about the
video scanning versus the screen updating got out of whack.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
BootLog:
CasperMD5CheckResult: skip
CompositorRunning: None
Date: Sat Jul 18 14:00:38 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c3) (prog-if 00
[VGA controller])
Subsystem: Lenovo Renoir [17aa:3f1a]
InstallationDate: Installed on 2020-07-16 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 81X2
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic
root=/dev/mapper/vgubuntu-root ro quiet splash acpi_enforce_resources=lax
vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/08/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: EECN20WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad Flex 5 14ARE05
dmi.modalias:
dmi:bvnLENOVO:bvrEECN20WW:bd04/08/2020:svnLENOVO:pn81X2:pvrIdeaPadFlex514ARE05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40700WIN:cvnLENOVO:ct31:cvrIdeaPadFlex514ARE05:
dmi.product.family: IdeaPad Flex 5 14ARE05
dmi.product.name: 81X2
dmi.product.sku: LENOVO_MT_81X2_BU_idea_FM_IdeaPad Flex 5 14ARE05
dmi.product.version: IdeaPad Flex 5 14ARE05
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: xserver-xorg-video-amdgpu (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 amdgpu apport-bug focal ubuntu xrandr-scaling
--
[amdgpu] [AMD Renoir] Display won't rotate, nor do fractional scaling, but
amdgpu.exp_hw_support=1 fixes it
https://bugs.launchpad.net/bugs/1888088
You received this bug notification because you are a member of Kernel Packages,
which is subscribed to linux in Ubuntu.
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
