Re: More breakage on HD7480D [ Aruba ]

Christian König
2014-05-12T07:33:05Z

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@amd.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@amd.com>
>>
>> Reverting that from current HEAD [
>>
>> commit 7e338c9991ecee9c2ac7a4cee2c2e11ecb563d02
>> Merge: 9cf22e80df77 aa07c713ecfc
>> Author: Linus Torvalds <torvalds@linux-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