apport information ** Attachment added: "Lspci-vt.txt" https://bugs.launchpad.net/bugs/1961070/+attachment/5561419/+files/Lspci-vt.txt
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1961070 Title: [regression] AMD RX 640 fail to display after upgrading to kernel 5.14 and later Status in linux package in Ubuntu: New Bug description: The problem is observed while debugging lp:1955720. The AMD RX 640 fails to work in kernel 5.14 and even the latest 5.17-rc. After kernel bisecting, I found disabling ASPM (reverting commit 0064b0ce85bb ("drm/amd/pm: enable ASPM by default")) can display w/o problem. However, the display seems to respond very slow to keyboard/mouse input. Created a bug on https://gitlab.freedesktop.org/drm/amd/-/issues/1907 for tracking. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: u 2050 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-focal-amd64-20200502-85+fossa-rockruff-adl+X163 DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2021-12-28 (49 days ago) InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary 20200502-05:58 Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 046d:c077 Logitech, Inc. M105 Optical Mouse Bus 001 Device 002: ID 04ca:007d Lite-On Technology Corp. USB wired keyboard Bus 001 Device 004: ID 8087:0033 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. OptiPlex 7000 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.14.0-1015-oem root=UUID=b7ac316b-ae2d-4f2c-b9bf-004de7577916 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.14.0-1015.15-oem 5.14.20 RelatedPackageVersions: linux-restricted-modules-5.14.0-1015-oem N/A linux-backports-modules-5.14.0-1015-oem N/A linux-firmware 1.187.20 Tags: focal Uname: Linux 5.14.0-1015-oem x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/22/2021 dmi.bios.release: 0.14 dmi.bios.vendor: Dell Inc. dmi.bios.version: 0.14.88 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr0.14.88:bd12/22/2021:br0.14:svnDellInc.:pnOptiPlex7000:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvr:sku0AC1: dmi.product.family: OptiPlex dmi.product.name: OptiPlex 7000 dmi.product.sku: 0AC1 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1961070/+subscriptions -- 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
