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After updating to kernel 5.13.0-23 I started having issues. Startup and
logging are extremely slow.

When I try to run firefox a dialog box shows up saying it is not
respondig and asking to wait or forcequit. If a wait it eventually opens
(after over a minute) and seems to work correctly. Similar issues occur
when trying to run mpv. In some cases the computer might even hang
completely.

I am running Ubuntu Budgie 21.10 (budgie-desktop 10.5.3). I also have
Xmonad installed. Xmonad starts much quicker but has the same issues
when running applications.

The problems seem to be solved by booting with kernel 5.13.0-22 or
kernel 5.13.0-23 with nomodeset.

I am using an HP computer with an AMD Ryzen 3 cpu with Radeon Vega Mobile Gfx.
--- 
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: Budgie:GNOME
DistUpgraded: Fresh install
DistroCodename: impish
DistroRelease: Ubuntu 21.10
DistroVariant: ubuntu
DkmsStatus:
 rtl8821ce, 5.5.2.1, 5.13.0-22-generic, x86_64: installed
 rtl8821ce, 5.5.2.1, 5.13.0-23-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev c3) (prog-if 
00 [VGA controller])
   Subsystem: Hewlett-Packard Company Pavilion Laptop 15-cw1xxx [103c:8615]
InstallationDate: Installed on 2021-11-13 (52 days ago)
InstallationMedia: Ubuntu-Budgie 21.10 "Impish Indri" - Release amd64 (20211012)
MachineType: HP HP Pavilion Laptop 15-cw1xxx
Package: xorg 1:7.7+22ubuntu2
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-23-generic 
root=UUID=bb28a6f2-0184-4836-8a2b-734aa3554528 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.13.0-23.23-generic 5.13.19
Tags:  impish ubuntu
Uname: Linux 5.13.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 08/27/2021
dmi.bios.release: 15.47
dmi.bios.vendor: AMI
dmi.bios.version: F.47
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 8615
dmi.board.vendor: HP
dmi.board.version: 46.30
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 46.30
dmi.modalias: 
dmi:bvnAMI:bvrF.47:bd08/27/2021:br15.47:efr46.30:svnHP:pnHPPavilionLaptop15-cw1xxx:pvr:rvnHP:rn8615:rvr46.30:cvnHP:ct10:cvrChassisVersion:sku9UV88LA#AC8:
dmi.product.family: 103C_5335KV HP Pavilion
dmi.product.name: HP Pavilion Laptop 15-cw1xxx
dmi.product.sku: 9UV88LA#AC8
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.107-8ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 21.2.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200714-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1build1

** Affects: ubuntubudgie
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected impish ubuntu
-- 
kernel 5.13.0-23 seems to cause graphics driver issues
https://bugs.launchpad.net/bugs/1956473
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