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Re: [Xen-users] UEFI-booted Xen turns into black screen after boot
On 21 Mar 2016 13:39, "Michael Fabian Dirks" <michael.fabian.dirks@xxxxxxxxx> wrote:
>
> > Hello,
> >
> > I tried getting Xen running on my system (Debian Testing, 64-bit, UEFI only :( ) however I continuously get stuck after loading the kernel. I've added Xen.efi to /boot/efi/EFI/Xen and made an EFI boot configuration for it too - it loads the kernel, does something really fast (can't even read it with a camera) and then it just goes to a black screen.
> >
> > System Info:
> > - /proc/version: Linux version 4.4.0-1-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc version 5.3.1 20160307 (Debian 5.3.1-11) ) #1 SMP Debian 4.4.6-1 (2016-03-17)
> > - /proc/cmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-1-amd64 root=UUID=a393c438-34cb-4237-be26-986ce78e960b ro quiet
> > - /proc/cpuinfo: http://pastebin.com/GbsgARg2
> > - /proc/meminfo: http://pastebin.com/nRWj4zr7
> > - /boot/efi/EFI/Xen/xen.cfg: http://pastebin.com/UGPnhz8x
> >
> > Hardware Info (if necessary):
> > - ASRock 970 Pro3
> > - 2x 1TB HDD in UEFI-RAID configuration (no SATA/AHCI boot possible with this)
> > - AMD Radeon R9 285 with AMDGPU + mesa drivers
> >
> > I feel like I missed a critical step - like a configuration file somewhere that tells Xen what to do. I couldn't find anything about this issue but I think that's cause my search-fu is weak. I hope someone can help me here - I tried finding log files but it doesn't look like any are created.
> >
> > Sincerely,
> >
> > Michael Fabian Dirks
>
> I managed to capture the exact last thing that shows up on screen:
> [ 35.352491] xen: registering gsi 24 triggering 0 polarity 1
> [ 35.353174] Already setup the GSI :24
> [ 35.353819] checking generic (c0000000 12c000) vs hw (c000000
> [ 35.354518] fb: switching to amdgpudrmfb from simple
>
> Immediately after the above line, the screen turns black. Do I have to
> go back to the open source AMD drivers for Xen to work properly?
Figured out how to fix it, had to copy all files from /boot into /boot/efi/EFI/Xen/. After that it started working. Well, to a degree. Lightdm won't run but I'm sure I can fix that.
Thanks.
Sincerely
Michael Fabian Dirks
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