From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Dave Airlie <airlied@gmail.com>,
James Simmons <jsimmons@infradead.org>
Subject: [RFC] Try a bit harder to get output on the screen at panic time
Date: Fri, 9 Apr 2010 15:10:50 -0700 [thread overview]
Message-ID: <20100409151050.74ef6dcd@virtuousgeek.org> (raw)
This set of 3 patches makes it a little more likely we'll get panic
output onto the screen even when X is running, assuming a KMS enabled
stack anyway.
It gets me from a blank or very sparsely populated black screen at
panic time, to one including the full backtrace and panic output at
panic time (tested with "echo c > /proc/sysrq-trigger" from an X
session).
It doesn't cover every case; for instance I think it'll fail when X has
disabled the display, but those cases need to be handled with separate
patches anyway (need to add atomic DPMS paths for instance).
Anyway, please test these out and let me know if they work for you.
--
Jesse Barnes, Intel Open Source Technology Center
next reply other threads:[~2010-04-09 22:10 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-09 22:10 Jesse Barnes [this message]
2010-04-09 22:11 ` [PATCH] drm: add locked variant of drm_fb_helper_force_kernel_mode Jesse Barnes
2010-04-12 0:05 ` Dave Airlie
2010-04-12 15:46 ` Jesse Barnes
2010-04-12 16:05 ` Jesse Barnes
2010-04-09 22:12 ` [PATCH] vt: try harder to print output when panicing Jesse Barnes
2010-04-09 22:12 ` [PATCH] fbcon: assume console is active if panicing Jesse Barnes
2010-04-19 22:05 ` [RFC] Try a bit harder to get output on the screen at panic time Jesse Barnes
2010-05-20 0:34 ` Jesse Barnes
2010-05-20 1:13 ` Maxim Levitsky
2010-05-20 1:27 ` Maxim Levitsky
2010-05-20 16:28 ` Jesse Barnes
2010-05-20 21:14 ` Maxim Levitsky
2010-05-21 21:57 ` Maxim Levitsky
2010-05-21 22:02 ` Jesse Barnes
2010-05-21 22:26 ` Maxim Levitsky
2010-05-30 14:48 ` Maxim Levitsky
2010-06-06 16:36 ` James Simmons
2010-06-08 23:20 ` Jesse Barnes
-- strict thread matches above, loose matches on Subject: below --
2010-05-31 5:03 Jesse Barnes
2010-05-31 6:09 ` Dave Airlie
2010-05-31 7:06 ` Maxim Levitsky
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