Re: 15-rc1: radeon modesetting fails

From: "Christian König" <christian.koenig@amd.com>
To: Alex Deucher <alexdeucher@gmail.com>, Borislav Petkov <bp@alien8.de>
Cc: Alex Deucher <alexander.deucher@amd.com>,
	lkml <linux-kernel@vger.kernel.org>,
	Maling list - DRI developers <dri-devel@lists.freedesktop.org>
Subject: Re: 15-rc1: radeon modesetting fails
Date: Tue, 15 Apr 2014 15:09:02 +0200	[thread overview]
Message-ID: <534D2F6E.1020608@amd.com> (raw)
In-Reply-To: <CADnq5_PpPa_fbm=1KH__q-W2OuvfoHr2wquimQ8TCq=xwwYq_Q@mail.gmail.com>

> Does reverting:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=32167016076f714f0e35e287fbead7de0f1fb179
> fix the issue?  We may need to tweak the pll parameters for older asics.

Yeah, indeed the most likely cause. Please provide dmesg outputs created 
with drm.ebug=0xe for the old and the new kernel.

Christian.

Am 15.04.2014 15:06, schrieb Alex Deucher:
> On Tue, Apr 15, 2014 at 8:07 AM, Borislav Petkov <bp@alien8.de> wrote:
>> Hi Christian,
>>
>> On Tue, Apr 15, 2014 at 11:28:55AM +0200, Christian König wrote:
>>> Hi Borislav,
>>>
>>> that's a known issue and should be fixed in the next rc, see this
>>> bugreport: https://bugs.freedesktop.org/show_bug.cgi?id=77009
>>>
>>> You might also want to try my branch with 3.15 fixes which includes
>>> the necessary patch for this: http://cgit.freedesktop.org/~deathsimple/linux/log/?h=drm-fixes-3.15-wip
>>>
>>> Let me know if that branch works for you or not.
>> so I went and merged your branch as you suggested. Btw, on its tip it
>> has:
>>
>> commit ec02666dd0791312b5820e1a9a023681d99d07ec
>> Author: Quentin Casasnovas <quentin.casasnovas@oracle.com>
>> Date:   Tue Mar 18 17:16:52 2014 +0100
>>
>>      drm/radeon: memory leak on bo reservation failure. v2
>>
>> (just checking whether I got the right one)
>>
>> and, unfortunately, no change - same problem. Let me know if I should
>> bisect the subset of 59 radeon patches which went in during the merge
>> window...
>>
>> Btw, just in case, I went and updated radeon firmware in
>> /lib/firmware/radeon/ from upstream but it didn't change anything.
> Does reverting:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=32167016076f714f0e35e287fbead7de0f1fb179
> fix the issue?  We may need to tweak the pll parameters for older asics.
>
> Alex
>
>> Thanks.
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