Re: [kbd] [systemd-devel] systemd-vconsole-setup fails very slowly

On Wed, Apr 1, 2015 at 2:47 PM, Kay Sievers <[email protected]> wrote:
> On Wed, Apr 1, 2015 at 11:38 PM, Andy Lutomirski <[email protected]> wrote:
>> On Wed, Apr 1, 2015 at 2:36 PM, Kay Sievers <[email protected]> wrote:
>
>>> They should only get created when something accesses the corresponding
>>> tty. deallocvt(1) can kill unused ones and the device nodes should
>>> disappear.
>>>
>>
>> deallocvt doesn't seem to kill those device nodes for me.
>
> Seems to work here:
>
> # ls -l /dev/vcs[6789]
> crw-rw---- 1 root tty 7, 6 Apr  1 22:21 /dev/vcs6
> # cat /dev/tty7
> ^C
> # cat /dev/tty9
> ^C
> # ls -l /dev/vcs[6789]
> crw-rw---- 1 root tty 7, 6 Apr  1 22:21 /dev/vcs6
> crw-rw---- 1 root tty 7, 7 Apr  1 23:42 /dev/vcs7
> crw-rw---- 1 root tty 7, 9 Apr  1 23:42 /dev/vcs9
> # deallocvt 7
> # ls -l /dev/vcs[6789]
> crw-rw---- 1 root tty 7, 6 Apr  1 22:21 /dev/vcs6
> crw-rw---- 1 root tty 7, 9 Apr  1 23:42 /dev/vcs9
> # deallocvt 9
> # ls -l /dev/vcs[6789]
> crw-rw---- 1 root tty 7, 6 Apr  1 22:21 /dev/vcs6

Aha.  It seems that I have something holding tty1-tty4 open.  I'll fix
that on my end.  Will that make vconsole-setup stop calling setfont?
If so, that will indirectly solve my problem.  (Although... I don't
see why the presence or absence of in-use vts should affect font
loading.  Also, it seems like vcs1 shows up no matter what I do.)

>
>>>> The offending qemu command line args appear to be -vga none -display
>>>> none.  I assume I have "CGA" because it's the fallback case in
>>>> vgacon.c if nothing matches.
>>>
>>> Hehe, blast from the past. :) If you give kvm a VGA device, it all works fine?
>>
>> I just tried it.  setfont succeeds, and the VGA device matches
>> /dev/vcs's contents.
>
> Ah, nice.
>
> If we figure out some dummy font-related call to check if the kernel
> supports font handling at all, we could just add that to
> vconsole-setup, I guess.
>
> Kay



-- 
Andy Lutomirski
AMA Capital Management, LLC