On Fri, 2013-03-22 at 14:28 +0100, Vincent Blut wrote: > Le jeudi 21 mars 2013 à 21:56 +0100, Vincent Blut a écrit : > > Le jeudi 21 mars 2013 à 19:28 +0100, Vincent Blut a écrit : > > > Package: src:linux > > > Version: 3.8.3-1~experimental.1 > > > Severity: important > > > Tags: upstream > > > > > > Hi, > > > > > > As mentioned in the subject, the following commit prevents me to resume from > > > suspend in kernel ≥ 3.8.1: > > > > > > commit cace7c323ddde7358ab2f2390ece964c55f30330 > > > Author: Alan Cox <alan@linux.intel.com> > > > Date: Fri Jan 25 10:28:15 2013 +1000 > > > > > > fb: rework locking to fix lock ordering on takeover > > > > > > commit 50e244cc793d511b86adea24972f3a7264cae114 upstream. > > > > > > Adjust the console layer to allow a take over call where the caller > > > already holds the locks. Make the fb layer lock in order. > > > > > > This is partly a band aid, the fb layer is terminally confused about the > > > locking rules it uses for its notifiers it seems. > > > > > > [akpm@linux-foundation.org: remove stray non-ascii char, tidy comment] > > > [akpm@linux-foundation.org: export do_take_over_console()] > > > [airlied: cleanup another non-ascii char] > > > Signed-off-by: Alan Cox <alan@linux.intel.com> > > > Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> > > > Cc: Stephen Rothwell <sfr@canb.auug.org.au> > > > Cc: Jiri Kosina <jkosina@suse.cz> > > > Tested-by: Sedat Dilek <sedat.dilek@gmail.com> > > > Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > > > Signed-off-by: Andrew Morton <akpm@linux-foundation.org> > > > Signed-off-by: Dave Airlie <airlied@redhat.com> > > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > > > > > I didn't try to boot with this commit reverted, and looking at its size, > > > I fear there will be some conflict to solve before attempting to do so. > > > > > > I guess it could be interesting to try 3.9-rc. to see how it > > > behaves (I didn't see what have been merged in this area in the last > > > merge window). I might try to connect through ssh to see if I get a > > > trace. > > > > Same issue with 3.9-rc3, I'll try to find some time tomorrow in order to > > get eventual stack traces. > > Some news here, the suspend/resume process is doing fine (I checked > while connected via ssh), but what I didn't notice because I was in a > dark room is that there is just no backlight. > > But I find a workaround, setting acpi_osi="!Windows 2012" in the kernel > command line seems to inhibit the issue. I found this workaround > accidentally because I need this parameter to make my brightness control > working again (I reported this in #702188 btw). So are these the same bug or two different bugs? In any case, please do not use the reportbug --no-bug-script option, as the kernel bug script provides lots of useful information. You can get that now by running: /usr/share/reportbug/handle_bugscript /usr/share/bug/linux-image-3.8-trunk-amd64/script $FILE and sending us that output file. Ben. -- Ben Hutchings Who are all these weirdos? - David Bowie, about L-Space IRC channel #afp
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