From: Vlastimil Babka <vbabka@suse.cz>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: "Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
mgraesslin@kde.org, "David Airlie" <airlied@linux.ie>,
dri-devel@lists.freedesktop.org,
LKML <linux-kernel@vger.kernel.org>,
"Mario Kleiner" <mario.kleiner.de@gmail.com>,
kwin@kde.org
Subject: Re: linux-4.4 bisected: kwin5 stuck on kde5 loading screen with radeon
Date: Fri, 15 Jan 2016 13:40:36 +0100 [thread overview]
Message-ID: <5698E8C4.70207@suse.cz> (raw)
In-Reply-To: <20160115122629.GC23290@intel.com>
On 01/15/2016 01:26 PM, Ville Syrjälä wrote:
> On Fri, Jan 15, 2016 at 11:34:08AM +0100, Vlastimil Babka wrote:
>>
>> I have suspected that kwin is waiting for some event, but nevertheless
>> tried bisecting the kernel between 4.3 and 4.4, which lead to:
>>
>> # first bad commit: [4dfd64862ff852df7b1198d667dda778715ee88f] drm: Use
>> vblank timestamps to guesstimate how many vblanks were missed
>>
>> I can confirm that 4.4 works if I revert the following commits:
>> 63154ff230fc9255cc507af6277cd181943c50a1 "drm/amdgpu: Fixup hw vblank
>> counter/ts for new drm_update_vblank_count() (v3)"
>>
>> d1145ad1e41b6c33758a856163198cb53bb96a50 "drm/radeon: Fixup hw vblank
>> counter/ts for new drm_update_vblank_count() (v2)"
>
> The sha1s don't seem to match what I have, so not sure which kernel tree
Hm sorry, I pasted the sha1 of the reverts by mistake.
Correct sha1 are:
5b5561b3660db734652fbd02b4b6cbe00434d96b "drm/radeon: Fixup hw vblank
counter/ts for new drm_update_vblank_count() (v2)"
fa4270d8e0257b4b76f11baa2866f4313d29aaf5 "drm: Don't zero vblank
timestamps from the irq handler"
235fabe09b46469adad2c9e4cb0563758155187c "drm: Add DRM_DEBUG_VBL()"
4dfd64862ff852df7b1198d667dda778715ee88f "drm: Use vblank timestamps to
guesstimate how many vblanks were missed"
8e36f9d33c134d5c6448ad65b423a9fd94e045cf "drm/amdgpu: Fixup hw vblank
counter/ts for new drm_update_vblank_count() (v3)"
Also, it turns out that the process actually showing the progress is
"ksplashqml", not kwin. It survives killing kwin, and restarting kwin
just makes it shown on top again, or something. If I force kill
ksplashqml instead of kwin, the desktop works including decorations
and everything. ksplashqml itself also waits in kernel in poll().
I'll try some of your suggestions, thanks!
next prev parent reply other threads:[~2016-01-15 12:40 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-15 10:34 linux-4.4 bisected: kwin5 stuck on kde5 loading screen with radeon Vlastimil Babka
2016-01-15 12:26 ` Ville Syrjälä
2016-01-15 12:40 ` Vlastimil Babka [this message]
2016-01-16 4:24 ` Mario Kleiner
2016-01-18 10:49 ` Vlastimil Babka
2016-01-18 14:06 ` Vlastimil Babka
2016-01-18 14:14 ` Christian König
2016-01-20 20:25 ` Vlastimil Babka
2016-01-20 20:32 ` Mario Kleiner
2016-01-21 3:43 ` Michel Dänzer
2016-01-21 5:31 ` Mario Kleiner
2016-01-21 6:38 ` Michel Dänzer
2016-01-21 6:41 ` Michel Dänzer
2016-01-21 7:58 ` Daniel Vetter
2016-01-21 8:36 ` Michel Dänzer
2016-01-21 10:09 ` Daniel Vetter
2016-01-22 3:06 ` Michel Dänzer
2016-01-22 15:18 ` Ville Syrjälä
2016-01-22 18:29 ` Mario Kleiner
2016-01-23 18:23 ` Mario Kleiner
2016-01-25 4:15 ` Michel Dänzer
2016-01-25 13:16 ` Mario Kleiner
2016-01-25 13:23 ` Ville Syrjälä
2016-01-25 13:44 ` Mario Kleiner
2016-01-25 14:53 ` Ville Syrjälä
2016-01-25 16:38 ` Mario Kleiner
2016-01-25 18:51 ` Daniel Vetter
2016-01-25 19:30 ` Mario Kleiner
2016-01-25 20:32 ` Daniel Vetter
2016-01-25 21:42 ` Mario Kleiner
2016-01-25 22:05 ` Daniel Vetter
2016-01-21 8:28 ` Mario Kleiner
2016-01-21 9:15 ` Vlastimil Babka
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