linux-kernel - Re: More breakage on HD7480D [ Aruba ]

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Date:	Mon, 12 May 2014 09:32:54 +0200
From:	Christian König <christian.koenig@....com>
To:	Ken Moffat <zarniwhoop@...world.com>
CC:	Alex Deucher <alexdeucher@...il.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: More breakage on HD7480D [ Aruba ]

Hi Ken,

*sigh* did I already mentioned that I hate PLLs? As soon as you fix 
something another use case immediately starts to break.

Please provide dmesg output created with drm.debug=0xe with and without 
the patch breaking it.

Thanks in advance,
Christian.

Am 12.05.2014 03:03, schrieb Ken Moffat:
> On Mon, May 12, 2014 at 01:34:06AM +0100, Ken Moffat wrote:
>
>   /me swears at myself for failing to copy to lkml.
>
>> Hi Christian, Alex -
>>
>>   my A4 Trinity (Radeon HD7480D) was working fine by -rc3.  But now
>> that I've tested it in -rc5 it is again broken (the screen goes
>> blank when KMS starts).  Bisection blames:
>>
>> 3b333c55485fef0089ae7398906599d000df195e is the first bad commit
>> commit 3b333c55485fef0089ae7398906599d000df195e
>> Author: Christian König <christian.koenig@....com>
>> Date:   Thu Apr 24 18:39:59 2014 +0200
>>
>>      drm/radeon: avoid high jitter with small frac divs
>>      
>>      Signed-off-by: Christian König <christian.koenig@....com>
>>
>>   Reverting that from current HEAD [
>>
>> commit 7e338c9991ecee9c2ac7a4cee2c2e11ecb563d02
>> Merge: 9cf22e80df77 aa07c713ecfc
>> Author: Linus Torvalds <torvalds@...ux-foundation.org>
>> Date:   Sun May 11 18:06:13 2014 +0900
>>
>>      Merge branch 'for-3.15' of git://linux-nfs.org/~bfields/linux
>>      
>>      Pull nfsd fixes from Bruce Fields.
>>
>> ]
>> makes it again boot.
>>
>>   Note to Alex - 3.15 has been an "interesting" cycle - you fixed my
>> earlier problem, despite my non-response, and thanks again for that.
>> After that, my other radeon broke after -rc2 (I retested it after
>> rc4 and found that although rc4 was broken, HEAD was fixed, so
>> thanks also for that.  Then I retested this one for -rc5.  It seems
>> that my boxes always break when I don't have time to test new
>> releases :-(
>>
>> ĸen
>> -- 
>> das eine Mal als Tragödie, dieses Mal als Farce

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