Comment 6 for bug 1038055

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Steve Langasek (vorlon) wrote : Re: cannot unlock LUKS devices / video mode not activated

Dmitrijs,

Which video driver are you using in your VM?

Installing from a quantal alpha 3 server image, I see the following in dmesg in KVM:

[ 2.900838] [drm] Initialized drm 1.1.0 20060810
[ 2.975879] checking generic (fc000000 160000) vs hw (fc000000 2000000)
[ 2.975885] fb: conflicting fb hw usage cirrusdrmfb vs EFI VGA - removing generic driver
[ 2.975914] Console: switching to colour dummy device 80x25
[ 3.010796] [drm:cirrus_vram_init] *ERROR* can't reserve VRAM
[ 3.010805] cirrus 0000:00:02.0: Fatal error during GPU init: -6
[ 3.010809] Trying to free nonexistent resource <00000000febf4000-00000000febf4fff>
[ 3.010814] Trying to free nonexistent resource <00000000fc000000-00000000fc3fffff>

This is when using gfxpayload=keep. If I manually switch to gfxpayload=text, I don't see this problem - there is no "EFI VGA" mentioned in dmesg.

When the problem occurs, I get a plymouth full-screen text splash, which can't be cleared (because the console is apparently dead). ssh'ing in and using chvt doesn't work. /proc/fb is empty. plymouth has run and exited successfully, leaving no error logs in /var/log/upstart.

> Disabling splash, brings up text interface to unlock the drive & allows to boot.
How did you disable splash? For me, disabling the 'splash' commandline option is insufficient unless I also disable the grub fb handoff.

Anyway, the bug I'm seeing is definitely a kernel bug, but I don't know if it's the same as your bug.