apport-collect updated and posted below. Again I know this is Linux-
Mint, but syncing to ensure there is visibility. I posted in the XFCE
and LM forums, and essentially my understanding this is a driver
incompatibility or library issue between the amdgpu open source drives
in kernel 5.3 and XFCE's Windows Compositor. Disabling windows
compositor (vsync) fixes the pixelation, but introduces wicked tearing,
while all this was and is fine using 5.0.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1868091
Title:
AMD graphics terrible pixelation on XFCE
Status in linux package in Ubuntu:
Confirmed
Bug description:
So posted this on several forums in Linux Mint 19.3 and XFCE. Seems
like the major difference is AMD base driver changes from 5.0.0-37 to
5.3 <- thus far any version causes severe pixelation for every new
window rendering Linux Mint XFCE unusable unless the Windows Display
Compositor is disabled. The hardware is an AMD Ryzen 5-3500U with 8 GB
RAM. 5.0.0-37 runs fine, and I installed Ubuntu Gnome desktop which
also seems to work (though not as snappy as the original XFCE). I
wanted to highlight and also understand if Xubuntu might face a
similar issue with that APU come the 20.04 update or if there is a fix
that hasn't made it to the Linux Mint distribution.
Other posts for reference:
https://forums.linuxmint.com/viewtopic.php?t=310609
https://bugzilla.xfce.org/show_bug.cgi?id=16403
Thank you
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.12
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: joe 2641 F.... pulseaudio
/dev/snd/controlC0: joe 2641 F.... pulseaudio
CurrentDesktop: XFCE
DistroRelease: Linux Mint 19.3
EcryptfsInUse: Yes
InstallationDate: Installed on 2020-01-03 (76 days ago)
InstallationMedia: Linux Mint 19.3 "Tricia" - Release amd64 20191213
MachineType: LENOVO 81NB
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-42-generic
root=UUID=9608f780-6ba5-4994-a7dc-72fa01f3daf5 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.3.0-42.34~18.04.1-generic 5.3.18
RelatedPackageVersions:
linux-restricted-modules-5.3.0-42-generic N/A
linux-backports-modules-5.3.0-42-generic N/A
linux-firmware 1.173.16
Tags: tricia
Uname: Linux 5.3.0-42-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 11/15/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: AMCN26WW(V1.09)
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: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad S340-14API
dmi.modalias:
dmi:bvnLENOVO:bvrAMCN26WW(V1.09):bd11/15/2019:svnLENOVO:pn81NB:pvrLenovoIdeaPadS340-14API:rvnLENOVO:rnLNVNB161216:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoIdeaPadS340-14API:
dmi.product.family: IdeaPad S340-14API
dmi.product.name: 81NB
dmi.product.sku: LENOVO_MT_81NB_BU_idea_FM_IdeaPad S340-14API
dmi.product.version: Lenovo IdeaPad S340-14API
dmi.sys.vendor: LENOVO
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