linux-kernel - Re: [BUG] at drivers/char/vt.c:3332 do_blank

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Date:	Wed, 28 Feb 2007 14:10:00 +0200
From:	"S.Çağlar Onur" <caglar@...dus.org.tr>
To:	"Antonino A. Daplas" <adaplas@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Machek <pavel@....cz>,
	lkml <linux-kernel@...r.kernel.org>, spock@...too.org
Subject: Re: [BUG] at drivers/char/vt.c:3332 do_blank_screen() on resume

22 Şub 2007 Per tarihinde, S.Çağlar Onur şunları yazmıştı: 
> 22 Şub 2007 Per tarihinde, Antonino A. Daplas şunları yazmıştı:
> > Ah, and you have fb_splash too.  That's why the tracing was not what I
> > expected it to be.
> >
> > Try using video=vesafb:noblank to disable hardware blanking and find out
> > if you can still reproduce the oops.
>
> I'll try and also will try to reproduce with vanilla one.

Sorry for long delay, here are some more test results;

* using video=vesafb:noblank _sometimes_ causes hard freezes on resume, and 
_sometimes_ X can't start properly (it enters a weird "switch vt1 - wait for 
some seconds - switch vt7" loop and after ~10 minutes X starts magically!) 
whenever this happens system starts to become really unresponsive and dmesg 
and Xorg's logs shows nothing strange :(. I will try an older kernel with 
noblank to see its related or not.

* If system resumes normally with noblank (it can sometimes :)), dmesg shows 
no error at all, X starts normally and system works well.

* I cannot reproduce that BUG with _vanilla one_ but please note that i cannot 
easily reproduce that with patched one also (it occurs only once for ~20 
suspend2disk/resume cycle)

I'll try to test more and trying to reproduce, if i can find anything else 
i'll knock your door again :)

Cheers
-- 
S.Çağlar Onur <caglar@...dus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!

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