From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 56139] [bisected] kernel 3.7.0-rc1 breaks 6950 (boot/grub2 and suspend/resume) (CAYMAN) Date: Mon, 19 Nov 2012 14:18:13 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1584720565==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id E6D54E60BD for ; Mon, 19 Nov 2012 06:18:13 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1584720565== Content-Type: multipart/alternative; boundary="1353334693.62f7F64a0.2577"; charset="us-ascii" --1353334693.62f7F64a0.2577 Date: Mon, 19 Nov 2012 14:18:13 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=56139 --- Comment #37 from Alexandre Demers --- (In reply to comment #36) > (In reply to comment #33) > > > Here is a partial kernel.log tracking what is going on at boot with some > > > debug printk in evergreen_mc_stop() and evergreen_mc_resume(). Strangely, > > > only one crtc is saved as enabled in the _stop function, but four are > > > restored in the _resume function. Pretty sure it's not the problem we are > > > looking for, but it is abnormal since only one crtc should be restored on > > > resume. This is a bug by itself showing a problem in the > > > save(stop)/restore(resume) mechanism. > > > > I should have said "... but six are restored..." instead of "... but four > > are restored..." I also made a small error in a debug string, but it doesn't > > change the read value. If you have any question on my patch, let me know. > > That issue is fixed in attachment 69573 [details] [review] which is already > upstream. I know it should have been fixed and that's why I added a printk(KERN_INFO "Restoring crtc[%d] since it was enabled.\n", i) just after it to check it. For some reason it seems to not be working properly. Have a look at my patch (attachment 70233) which was written on a 3.7.0-rc6 kernel. I'll add some other printk when I'll get home (like a printk just before this check to output its value). -- You are receiving this mail because: You are the assignee for the bug. --1353334693.62f7F64a0.2577 Date: Mon, 19 Nov 2012 14:18:13 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 37 on bug 56139 from 
(In reply to comment #36)
> (In reply to comment #33)
> > > Here is a partial kernel.log tracking what is going on at boot with some
> > > debug printk in evergreen_mc_stop() and evergreen_mc_resume(). Strangely,
> > > only one crtc is saved as enabled in the _stop function, but four are
> > > restored in the _resume function. Pretty sure it's not the problem we are
> > > looking for, but it is abnormal since only one crtc should be restored on
> > > resume. This is a bug by itself showing a problem in the
> > > save(stop)/restore(resume) mechanism.
> > 
> > I should have said "... but six are restored..." instead of "... but four
> > are restored..." I also made a small error in a debug string, but it doesn't
> > change the read value. If you have any question on my patch, let me know.
> 
> That issue is fixed in attachment 69573 [details] [review] [review] which is already
> upstream.

I know it should have been fixed and that's why I added a printk(KERN_INFO
"Restoring crtc[%d] since it was enabled.\n", i) just after it to check it. For
some reason it seems to not be working properly. Have a look at my patch
(attachment 70233 [details]) which was written on a 3.7.0-rc6 kernel. I'll add some other
printk when I'll get home (like a printk just before this check to output its
value).

You are receiving this mail because:
  • You are the assignee for the bug.
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