Reading the initial bug report I see kolAflash said > nomodeset seems to be essential, but not sufficient.
When I added nomodeset to /etc/default/grub ( GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset" ) then I can boot without issues, but suspend does not work. To reiterate: * the TTY1 screen is not blank on boot * sleep works * suspend does not work - you get this bug Given this error in syslog: > kernel: [ 0.047848] You have booted with nomodeset. This means your GPU > drivers are DISABLED > kernel: [ 0.047849] Unless you actually understand what nomodeset does, > you should reboot without enabling it > [ 0.047849] Any video related functionality will be severely degraded, and > you may not even be able to suspend the system properly > [ 0.047849] Unless you actually understand what nomodeset does, you should > reboot without enabling it I tried a few things without nomodeset in grub options. In this case: * the default screen, TTY1, (CTRL-ALT-F1) is blank on boot (or has the HP logo only) * sleep works * suspend doesn't seem to work. If you leave the laptop in suspend mode for a long time it does not resume. The screen is black with just a white underscore on it. The last log lines in /var/log/syslog is systemd[1]: Reached target Sleep. systemd[1]: Starting Suspend... systemd-sleep[8263]: Suspending system... kernel: [ 9425.088936] PM: suspend entry (s2idle) As a workaround for the default screen being blank on boot, you can go to TTY2 (CTRL-ALT-F2), log in and run startx from the command prompt. Some tests: * This does not seem to be the same issue as https://bugzilla.kernel.org/show_bug.cgi?id=204241 because the following command works just fine. for i in $(seq 30); do sudo rtcwake -m mem -s 5; sleep 15; done * I've tried adding GRUB_GFXMODE=1920x1080 to /etc/default/grub but that doesn't seem to solve the issue with the screen on TTY1 being blank on boot. The commands pm-hibernate and pm-suspend give the errors in /var/log/syslog > [ 2566.154192] Lockdown: grep: hibernation is restricted; see man > kernel_lockdown.7 and nothing happens The command pm-powersave gives the same "hibernation is restricted" error in /var/log/syslog but the system goes blank and the is unresponsive. ** Bug watch added: Linux Kernel Bug Tracker #204241 https://bugzilla.kernel.org/show_bug.cgi?id=204241 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881494 Title: [amdgpu] suspend to ram (standby) crashes amdgpu (Ryzen-7 Vega - HP Envy x360) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881494/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
