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From: Andrew Lutomirski <luto@mit.edu>
To: Eric Anholt <eric@anholt.net>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Revert i915.semaphore=1 default from 47ae63e0
Date: Fri, 10 Jun 2011 10:06:39 -0400
Message-ID: <BANLkTimk=HmdN7HGkV5+0hj4VUq2eO=crw@mail.gmail.com> (raw)
In-Reply-To: <87ipsiglms.fsf@eliezer.anholt.net>

On Tue, Jun 7, 2011 at 3:12 AM, Eric Anholt <eric@anholt.net> wrote:
> On Thu, 19 May 2011 16:50:00 -0400, Andrew Lutomirski <luto@mit.edu> wrote:
>> On Thu, May 19, 2011 at 3:56 PM, Keith Packard <keithp@keithp.com> wrote:
>> > On Fri, 13 May 2011 12:14:54 -0400, Andy Lutomirski <luto@MIT.EDU> wrote:
>> >
>> >> My Q67 / i7-2600 box has rev09 Sandy Bridge graphics.  It hangs
>> >> instantly when GNOME loads and it hangs so hard the reset button
>> >> doesn't work.  Setting i915.semaphore=0 fixes it.
>> >
>> > Can you describe precisely what hardware you have? The make and model of
>> > the motherboard and the exact model of CPU? I'd like to get this issue
>> > resolved for 2.6.40 and need to have a reliable way to reproduce the
>> > hang; replicating your hardware may be a good way of doing that.
>>
>> Intel DQ67SW.  AMT is enabled but the port 5900 is closed (because I
>> can't figure out how to turn on the kvm).
>>
>> The system boots from UEFI (which is buggy, both because efifb doesn't
>> recognize my hardware, because asking the firmware for the boot menu
>> causes all efivars entries to be ignored, and because unless I set
>> reboot=k the system crashes on reboot).
>>
>> Userspace is F15 running compiz (*not* gnome-shell).
>>
>> BIOS is SWQ6710H.86A.0051.2011.0413.1154.
>>
>> CPU is:
>> processor       : 0
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 42
>> model name      : Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
>> stepping        : 7
>
> I fear this bug is just "getting more asynchronous with the GPU means we
> trigger race conditions on the GPU more easily."  On that note, could
> you retest with Mesa as of this commit, since I'm told this is a GT1 CPU:
>
> commit ef59049c5242a1be7fa59a182d342191185dd62b
> Author: Eric Anholt <eric@anholt.net>
> Date:   Sun Jun 5 23:20:57 2011 -0700
>
>    i965: Fix flipped GT1 vs GT2 URB VS entry count limits.
>

Nope -- I still got the reset-button-not-working hang.

I'm pretty sure I installed mesa right -- I moved everything in
/usr/lib64/dri out of the way and put the files in mesa/lib/ in there.

--Andy

  reply index

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-13  5:38 [2.6.39 regression] hard lock when GNOME starts Andrew Lutomirski
2011-05-13 16:07 ` Andrew Lutomirski
2011-05-13 16:14   ` [PATCH] drm/i915: Revert i915.semaphore=1 default from 47ae63e0 Andy Lutomirski
2011-05-15 23:09     ` Keith Packard
2011-05-19 19:56     ` Keith Packard
2011-05-19 20:50       ` Andrew Lutomirski
2011-05-24 17:10         ` Andrew Lutomirski
2011-05-24 17:46           ` Keith Packard
2011-05-24 20:05           ` Ivan Bulatovic
2011-06-07  7:12         ` Eric Anholt
2011-06-10 14:06           ` Andrew Lutomirski [this message]
2011-08-22 16:53             ` Jesse Barnes
2011-08-31 18:24               ` Ben Widawsky
2011-08-31 18:30               ` Andrew Lutomirski
2011-08-31 19:07                 ` Keith Packard
2011-08-31 19:37                   ` Andrew Lutomirski
2011-09-26 17:59                     ` [PATCH] drm/i915: kicking rings considered harmful Daniel Vetter
2011-09-26 19:07                       ` Andrew Lutomirski
2011-09-27  9:57                         ` Daniel Vetter
2011-09-27  5:22                       ` Ben Widawsky
2011-09-27 10:03                         ` Daniel Vetter
2011-09-27 16:46                           ` Ben Widawsky
2011-09-27 17:31                             ` Chris Wilson
2011-09-27 18:03                               ` Daniel Vetter
2011-09-27 19:38                                 ` Ben Widawsky
2011-09-27 21:54                                   ` Chris Wilson
2011-09-28  1:34                                     ` Ben Widawsky
2011-09-28  8:47                                       ` Chris Wilson
2011-09-28  8:53                                         ` Daniel Vetter
2011-10-03 20:21                                           ` Andrew Lutomirski
2011-10-03 21:02                                             ` Daniel Vetter

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