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    SubjectRe: [Bug #13819] system freeze when switching to console


    On Tue, 8 Sep 2009, Jesse Barnes wrote:
    > > This regression is almost two months old, and apparently the Intel
    > > graphics people DID ABSOLUTELY NOTHING about it during those two
    > > months, because they couldn't be bothered to look at it.
    >
    > Yeah sorry, this is the first I've seen of it... I usually troll the
    > regressions lists but I must have missed this one.

    Hmm. We must have screwed up something, because this was bisected to the
    intel DRI commits back in July. See

    http://bugzilla.kernel.org/show_bug.cgi?id=13819#c4

    and while there was some confusion about exactly which commit caused
    it - probably because the irq thing obviously depends on timing -
    Reinette had a list of three commits that he used to be able to revert to
    get things going:

    drm/i915: Don't update display FIFO watermark on IGDNG
    drm/i915: add FIFO watermark support
    drm/i915: enable error detection & state collection

    So Andrew assigned it to DRI, and Rafael has had both Eric and Ma Ling on
    the cc for his regression reports because of the bisection. And that has
    been going on for a long time, I just checked:

    Date: Sun, 26 Jul 2009 22:28:26 +0200 (CEST)
    From: Rafael J. Wysocki <rjw@sisk.pl>
    To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
    Cc: Kernel Testers List <kernel-testers@vger.kernel.org>, Eric Anholt <eric@anholt.net>, "ling.ma@intel.com" <ling.ma@intel.com>,
    Linus Torvalds <torvalds@linux-foundation.org>, Ma Ling <ling.ma@intel.com>, Reinette Chatre <reinette.chatre@intel.com>
    Subject: [Bug #13819] system freeze when switching to console

    If you didn't see it, then that means that we have screw-ups with the
    bugzilla thing. You're actually listed as a "Reviewed-by" on the commit
    that the fixed-up bisection blamed - And I get the feeling that Rafael's
    bugzilla "bugme" scripts may only pick up "Signed-off-by:" lines.

    The point is: this bug has been in bisected in bugzilla for a month and a
    half, and had at least two Intel DRI people cc'd on the weekly reminder
    reports, along with being

    Assigned To: drivers_video-dri@kernel-bugs.osdl.org

    We have other bugs on the regression list that are even older (no, I'm not
    proud of them):

    http://bugzilla.kernel.org/show_bug.cgi?id=13809
    http://bugzilla.kernel.org/show_bug.cgi?id=13740
    http://bugzilla.kernel.org/show_bug.cgi?id=13733
    http://bugzilla.kernel.org/show_bug.cgi?id=13645

    but they aren't bisected and it's not nearly as clear what is going on
    there. The last one in particular I don't know if it even happens any
    more and the first one seems to be fixed in -rc5, or at least the
    reporter couldn't reproduce it any more..

    Linus


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