linux-kernel - Re: Weird Xorg stretching (setfont)

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Message-Id: <E1JyDSG-0003g7-Kd@be1.7eggert.dyndns.org>
Date:	Tue, 20 May 2008 00:03:40 +0200
From:	Bodo Eggert <7eggert@....de>
To:	Sitsofe Wheeler <sitsofe@...oo.com>, linux-kernel@...r.kernel.org,
	Dave Airlie <airlied@...il.com>,
	Chris Snook <csnook@...hat.com>
Subject: Re: Weird Xorg stretching (setfont)

Sitsofe Wheeler <sitsofe@...oo.com> wrote:
> Dave Airlie wrote:

>> wierd got any fglrx or anything installed on you're system.. the
>> radeon drm hasn't seen any changes that should affect this sorta
>> thing, do you run radeonfb or vesafb?
> 
> Just in case you didn't see my reply I'm not an fglrx user and I don't run
> radeonfb or vesafb.
> 
> After testing far too many kernels it turns out that this is not a
> conventional regression. During startup openSUSE runs the following
> command:
> 
> /bin/setfont -C /dev/tty1 lat9w-16.psfu -m trivial
> 
> in /etc/init.d/kbd
> 
> Now on the openSUSE provided 2.6.22.17-0.1-default #1 SMP kernel if X has
> started and your run that command (e.g.
> chvt 7; sleep 5s && /bin/setfont -C /dev/tty1 lat9w-16.psfu -m trivial
> ) the command will fail with error output similar to the following:
> setfont: putfont: 256,8x16: failed: -1
> putfont: KDFONTOP: Invalid Argument
> 
> If you are using a stock kernel (e.g. 2.6.24/2.6.25 etc) the command will
> not fail and will instead corrupt X causing the lower part of the screen to
> be drawn using the same line (creating a stretch/mirror effect).

I see a similar effect on my "GeForce2 MX/MX 400" using the "nv" driver.
The difference is: I see both the screen corruption and (from ssh):
be10:/etc/init.d # ./kbd start
Loading keymap qwertz/de-latin1-nodeadkeys.map.gz                    done
Keyboard: Typematic Rate set to 30.0 cps (delay = 250 ms)            done
Loading compose table latin1.add                                     done
Stop Unicode mode
kbd_mode not called for /dev/pts/1                                   done
Loading console font lat9w-16.psfu  -m trivial (K
putfont: PIO_FONT: Invalid argument                                  failed
be10:/etc/init.d #


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