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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875200 Title: [amdgpu] Entire computer freezes shortly after bootup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875200/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
