Re: [LAU] rt prio with kernel 3.x, issue to use the vesa driver

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To: <linux-audio-user@...>
Cc: ubuntu-studio-devel <ubuntu-studio-devel@...>, ubuntu-studio-users <ubuntu-studio-users@...>
Date: Sunday, May 6, 2012 - 1:58 pm

On Sun, 2012-05-06 at 15:39 +0200, Emanuel Rumpf wrote:

Thank you, regarding to
http://lists.linuxaudio.org/pipermail/linux-audio-tuning/2012-May/000147...
you've got similar issues.

Since there are other issues on my AV Linux (Debian stable) install
using a 3.0, I'll use a 2.6 kernel, when I drop 3.2.0-23-lowlatency for
Precise. OTOH for a while some 3.0 or 3.x was ok on Arch, but now it's
broken too.

Anyway, perhaps somebody has got an idea:
spinymouse@oz:~$ cat /media/precise/var/log/Xorg.0.log
[snip]
[ 10.974] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 10.975] vesa: Ignoring device with a bound kernel driver
[ 10.975] (WW) Falling back to old probe method for vesa
[ 10.975] (II) UnloadModule: "vesa"
[ 10.975] (II) Unloading vesa
[ 10.975] (EE) Screen(s) found, but none have a usable configuration.
[ 10.975]
Fatal server error:
[ 10.975] no screens found
[snip]
spinymouse@oz:~$ cat /media/precise/etc/X11/xorg.conf
Section "Device"
Identifier "Configured Video Device"
Driver "vesa"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
#HorizSync 42.0 - 52.0
#VertRefresh 55.0 - 65.0
#Modeline "1024x768" 60.80 1024 1056 1128 1272 768 768 770 796
#Modeline "800x600" 38.21 800 832 976 1008 600 612 618 631
#Modeline "640x480" 24.11 640 672 760 792 480 490 495 50
#DisplaySize 305 230
HorizSync 29-98
VertRefresh 50-120
modeline "1024x768" 128.42 1152 1232 1360 1568 864 865 868 910
#Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
Subsection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubsection
EndSection

I guess that later today I'll restore the nvidia's xorg.conf and build a
non-rt preempt 3.0 and/or 2.6 with threadirqs.
Perhaps I'll keep the current kernel after installing a new kernel and
will subscribe to the tuning list.

On Debian list somebody has many issues with latest kernel, while he or
she hasn't with 2.6. I guess non-audio usage.

Regards,
Ralf

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Re: [LAU] rt prio with kernel 3.x, issue to use the vesa dri..., Ralf Mardorf, (Sun May 6, 1:58 pm)