Hi Ilyes,
Thank you for the incredibly thorough bug report — your systematic
testing (five test cases, full environment details, appendices with
command outputs) is exactly what we need to narrow down Plymouth boot-
handoff issues. I've reviewed your report and identified one critical
gap before I can pinpoint the root cause.
Your current dmesg attachment contains only running-system entries
(timestamps ~30000+) with WiFi firmware errors — zero Plymouth, DRM
initialization, or VT handoff logs from when the system first boots and
hangs at the spinner.
Please reboot with your current 'plymouth.enable=0' workaround disabled.
On the next boot, when it hangs at the spinner, switch to a text TTY
(Ctrl+Alt+F3) and run:
sudo dmesg | grep -iE 'plymouth|drm|vga_switch|fbcon' > /tmp/boot-dmesg.txt
cat /tmp/boot-dmesg.txt
Paste the full output here.
Optional but helpful (from a working boot with plymouth.enable=0):
After you've booted successfully with Plymouth disabled, these two
commands can help identify which display connector the system uses:
grep -i 'connector\|output\|screen' /var/log/Xorg.0.log
If you also have journalctl output from a failing boot (e.g.,
'journalctl -b -1' showing Plymouth/LightDM interaction logs), that
would be valuable too — but the dmesg above is the priority.
Please let us know once you've had a chance to collect this data, or if
you encounter any issues with the workaround. Your help here will
significantly speed up getting this fixed.
Thanks again for your patience and thorough testing.
** Changed in: plymouth (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2150287
Title:
Plymouth -> LightDM handoff hang on HP Victus AMD/NVIDIA hybrid system
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