From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>,
Adrian Bunk <bunk@stusta.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jens Axboe <jens.axboe@oracle.com>,
Jeff Chua <jeff.chua.linux@gmail.com>,
pavel@suse.cz, linux-pm@lists.osdl.org, lenb@kernel.org,
linux-acpi@vger.kernel.org, luming.yu@intel.com,
Arkadiusz Miskiewicz <arekm@maven.pl>,
Konstantin Karasyov <konstantin.a.karasyov@intel.com>,
Greg KH <greg@kroah.com>,
linux-usb-devel@lists.sourceforge.net,
Thomas Meyer <thomas.mey@web.de>, Meelis Roos <mroos@linux.ee>,
Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>,
Janosch Machowinski <jmachowinski@gmx.de>,
vladimir.p.lebedev@intel.com,
Ash Milsted <thatistosayiseenem@gawab.com>,
dmitry.torokhov@gmail.com, linux-input@atrey.karlin.mff.cuni.cz,
"Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [2/6] 2.6.21-rc2: known regressions
Date: Fri, 9 Mar 2007 10:00:49 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0703090949140.10832@woody.linux-foundation.org> (raw)
In-Reply-To: <20070309105635.GA11635@elte.hu>
On Fri, 9 Mar 2007, Ingo Molnar wrote:
> > Some day we may have modesetting support in the kernel for some
> > graphics hw, right now it's pretty damn spotty.
>
> having no video is what i'd have expected - but getting a /hang/ is not
> what i'd have expected.
I debugged a case exactly like this (with the TRACE_RESUME() thing) back
last November on my laptop.
The problem is that radeonfb actually *tries* to re-initialize the
graphics chips, but because it doesn't know all the details, it does it
wrong, and hangs the whole chip.
I forget exactly where it happened, and it might well be different for
you. But this is exactly what TRACE_RESUME can be used to pinpoint if you
want to try to debug it.
Linus
next prev parent reply other threads:[~2007-03-09 18:00 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.0702272105220.12485@woody.linux-foundation.org>
2007-03-05 1:50 ` [2/6] 2.6.21-rc2: known regressions Adrian Bunk
2007-03-07 11:09 ` Jeff Garzik
2007-03-07 16:10 ` Linus Torvalds
2007-03-08 12:03 ` Ash Milsted
2007-03-08 12:31 ` Michael S. Tsirkin
2007-03-08 15:11 ` Jeff Chua
2007-03-08 18:01 ` Linus Torvalds
2007-03-08 19:06 ` Ingo Molnar
2007-03-08 19:10 ` Ingo Molnar
2007-03-08 19:47 ` Michael S. Tsirkin
2007-03-08 20:10 ` Ingo Molnar
2007-03-08 19:25 ` Ingo Molnar
2007-03-08 23:07 ` Ingo Molnar
2007-03-08 23:12 ` Ingo Molnar
2007-03-08 23:28 ` Ingo Molnar
2007-03-08 23:49 ` Linus Torvalds
2007-03-09 10:56 ` Ingo Molnar
2007-03-09 18:00 ` Linus Torvalds [this message]
2007-03-09 11:19 ` Pavel Machek
2007-03-18 16:07 ` Ingo Molnar
2007-03-18 16:40 ` [linux-pm] " Jim Gettys
2007-03-19 20:33 ` Bill Davidsen
2007-03-19 22:08 ` Jim Gettys
2007-03-20 14:44 ` Bill Davidsen
2007-03-09 17:48 ` Johannes Stezenbach
2007-03-09 23:35 ` Pavel Machek
2007-03-10 9:01 ` Ingo Molnar
2007-03-10 22:04 ` s2ram (was Re: [2/6] 2.6.21-rc2: known regressions) Pavel Machek
2007-03-08 19:46 ` [2/6] 2.6.21-rc2: known regressions Michael S. Tsirkin
2007-03-08 19:57 ` Michael S. Tsirkin
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