Re: KMScon vs. AMD Radeon

["pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>]

On Thu, Apr 18, 2019 at 11:47:04PM +0200, Ludovic Courtès wrote:
> "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis:
> > On Mon, Apr 15, 2019 at 02:09:57PM +0200, Ludovic Courtès wrote:
> > The resolution is slightly too small to read all text boxes in the
> > installer’s disk partitioning dialog though.  The screen height is
> > only about 35 lines.  I don’t know how to fix this, but it is not that
> > important.
> 
> Do you mean the resolution is too low?  Are there fewer lines that in
> the QEMU screenshot below?
> 

Yes, there are fewer lines.  The line above “Choose the language” is
the first visible line.  The header -| Locale language |- is
invisible.  The bottom of the window with ----------------- is the
last visible line.  That makes for 31 lines in total.



> > The installer got stuck in a bash prompt at the end (which is probably
> > unrelated to AMD).  I exited the bash prompt and got an installer
> > dialog message with a button to Reboot, but it did not reboot.
>
> It got stuck after ‘guix system init’ had completed, right?
> 

Yes.  I just installed anew.  Right after “bootloader successfully
installed on '/boot/efi'”, a bash prompt is shown and accepts input:

bash-4.4#



> Were there any hints in /var/log/messages or tty12?
> 



The last messages in tty12 as well as in /var/log/messages are

Apr 19 13:11:18 localhost shepherd[1]: Service cow-store has been started.
Apr 19 13:25:51 localhost connmand[483]: ntp: adjust (slew): -0.014120 sec

so presumably the only thing that was logged after installation
started is a boring NTP adjust.

An approximate transcription of what pstree shows:

|
|-kmscon---8kj92lqap405nfs---9xd24lv3gpp5qgh---bash---pstree
|                          |                 \-9*[{9xd24lv3gpp5qgh}]
|                           \-7&[{8kj92lqap405nfs}]

According to ps output, 8kj is installer and 9xd is installer-real.

I do not know how to attach to 9xd with gdb.

Either way, once I quit bash I get an -| Installation complete |-
message.




> > Then the installed system has no graphics too (graphics freeze at the
> > same message
> >
> > [   51.910992] fb0: switching to radeondrmfb from EFI VGA
> >
> > but I cannot add modprobe.blacklist=radeon because GRUB does not
> > recognize my USB keyboard now (in the installer’s GRUB the USB
> > keyboard was recognized).
> 
> Weird.  What keyboard layout had you selected?
> 

English (US) intl. with AltGr dead keys.




> Is it UEFI or “BIOS”?
> 

UEFI.




> (Also, I gather dd’ing to a USB key worked this time, right?)
> 

Yes.  This machine boots Guix git master fine, the ISO 9p cache issue
is fixed, other issues with booting on my Macbook are not an issue on
this machine.

Regards,
Florian