Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1756324
Title:
No signal after upgrading on 18.04
Status in xorg package in Ubuntu:
Confirmed
Bug description:
Basically, yesterday I upgraded from 17.10 to 18.04 Bionic Beaver. At
the reboot, when I boot onto Ubuntu, after the GRUB has been shown, it
just boots to nothing, my screen display "No signal detected",
although I can hear the drum sound. Using nomodeset works but my
computer is set at a wrong frequency (stuck to 77Hz, even forcing via
xrandr doesn't work). So using nomodeset I got into i3, downloaded
mesa drivers and tried radeon too, and rebooted. Now still shows no
signal, but I can get into a fluent 60Hz i3, if I go to recovery mode,
then press normal boot. The problem also with that is that GNOME
doesn't work, when I leave i3, log onto GNOME, it shows a blackscreen
and just sends me back to the login menu. I've noticed this error
appeared at boot: [drm:amdgpu_init [amdgpu]] *ERROR* VGACON disables
amdgpu kernel modesetting.
Here's xrandr output: xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 0.00*
1280x1024 0.00
1024x768 0.00
800x600 0.00
640x480 0.00
Thanks for any future help!
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