Sorry for the delay - something very weird happened. On April 29, the system hanged in the "Black screen with Lenovo and Ubuntu on both monitors" phase. I then hard-reset the machine (as usual) and generated the log file as instructed by you. It is attached to this comment as prevboot-hang-on-black-ubuntu.txt
However, I then noticed that I mistakenly did NOT boot into recovery mode, but into normal mode, and the system hadn't crashed! I checked with "glxgears -info" that indeed the hardware renderer was used (not llvmpipe) and wanted to find out how long the system would work this way. It turns out that it worked - with regular usage, mostly Chrome and Terminal but also some video playback - until I had to reboot it for unrelated reasons on May 5th, with multiple suspend/resume cycles. While using it I noticed some situations when a terminal window would display something that looked like a rectangular area failing to update; or maybe something like "double buffering gone wrong", i.e. it would display - in a rectangular area - content that had been displayed before. Refreshing the terminal would fix it. >From May 5th until today I had to use the system in Windows (where nothing noticeable happened); now I rebooted into Ubuntu again and promptly the system crashed again, this time while inputting the password in the login screen. I'll attach prevboot-hang-on-login- screen.txt later. ** Attachment added: "prevboot-hang-on-black-ubuntu.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875200/+attachment/5368815/+files/prevboot-hang-on-black-ubuntu.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/1875200 Title: [amdgpu] Entire computer freezes shortly after bootup Status in linux package in Ubuntu: Incomplete Bug description: I'm not sure if this bug was filed completely; I used the "ubuntu-bug" command which gathered a lot of information and files, but then the bugs.launchpad.net site timeouted and I'm not sure if the information I entered before and the files that were gathered have actually been submitted. Summary: after an upgrade to Ubuntu 20.04 my entire computer freezes some seconds after bootup. It does not even reply to pings anymore and remote logins stop working as well. When booting it in recovery mode and then immediately using the menu option to continue booting, it appears to work reliably, but it only detects one monitor and there is no 3d acceleration. I've seen freezes happening at the following points: a) at the stage of a black screnen saying "lenovo" in the middle and "ubuntu" at the bottom (of both monitors) b) when asking for username and password to login c) after login When I was using the same computer with Ubuntu 19.10, there was no such problem. The computer is a Lenovo ThinkCentre M920x, the graphics card used is 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 550 640SP / RX 560/560X] (rev ef) with two monitors (3840x2160) connected via MiniDisplayPort ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sun Apr 26 14:29:19 2020 DistUpgraded: 2020-04-25 14:33:16,904 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GpuHangFrequency: Continuously GpuHangReproducibility: Seems to happen randomly GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Subsystem: Lenovo UHD Graphics 630 (Desktop 9 Series) [17aa:3135] Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 550 640SP / RX 560/560X] [1002:67ff] (rev ef) (prog-if 00 [VGA controller]) Subsystem: Bitland(ShenZhen) Information Technology Co., Ltd. Baffin [Radeon RX 550 640SP / RX 560/560X] [1642:1725] InstallationDate: Installed on 2020-03-29 (28 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: LENOVO 10S1002NMZ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=ff61fce1-cc83-4bbe-bc88-09cdd2ac7471 ro recovery nomodeset SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to focal on 2020-04-25 (0 days ago) XorgLogOld: dmi.bios.date: 02/17/2020 dmi.bios.vendor: LENOVO dmi.bios.version: M1UKT50A dmi.board.name: 3135 dmi.board.vendor: LENOVO dmi.board.version: SDK0T08861 WIN 3305220985042 dmi.chassis.type: 35 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrM1UKT50A:bd02/17/2020:svnLENOVO:pn10S1002NMZ:pvrThinkCentreM920x:rvnLENOVO:rn3135:rvrSDK0T08861WIN3305220985042:cvnLENOVO:ct35:cvrNone: dmi.product.family: ThinkCentre M920x dmi.product.name: 10S1002NMZ dmi.product.sku: LENOVO_MT_10S1_BU_Think_FM_ThinkCentre M920x dmi.product.version: ThinkCentre M920x dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875200/+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
