From mboxrd@z Thu Jan  1 00:00:00 1970
From: Colin Ian King <colin.king@canonical.com>
Subject: Re: S3 resume and commit
	24576d23976746cb52e7700c4cadbf4bc1bc3472
Date: Tue, 17 Dec 2013 16:40:15 +0000
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	<20131217083026.7f91207e@jbarnes-desktop>
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To: Jesse Barnes <jbarnes@virtuousgeek.org>, Daniel Vetter <daniel.vetter@ffwll.ch>
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On 17/12/13 16:30, Jesse Barnes wrote:
> On Tue, 17 Dec 2013 10:52:06 +0100
> Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> 
>> On Mon, Dec 16, 2013 at 7:52 PM, Colin Ian King
>> <colin.king@canonical.com> wrote:
>>> Hi there,
>>>
>>> There is a S3 resume issue that affects HP Mini Atom N270 with Intel
>>> Mobile 945GSE on Linux 3.9.0 upwards.
>>>
>>> Device:
>>> 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile
>>> 945GSE Express Integrated Graphics Controller [8086:27ae] (rev 03)
>>> (prog-if 00 [VGA controller])
>>>         Subsystem: Hewlett-Packard Company Device [103c:361a]
>>>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
>>> ParErr- Stepping- SERR- FastB2B- DisINTx-
>>>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
>>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>>>         Latency: 0
>>>         Interrupt: pin A routed to IRQ 16
>>>         Region 0: Memory at fe980000 (32-bit, non-prefetchable) [size=512K]
>>>         Region 1: I/O ports at dc80 [size=8]
>>>         Region 2: Memory at d0000000 (32-bit, prefetchable) [size=256M]
>>>         Region 3: Memory at fe940000 (32-bit, non-prefetchable) [size=256K]
>>>         Expansion ROM at <unassigned> [disabled]
>>>         Capabilities: <access denied>
>>>         Kernel driver in use: i915
>>>
>>> Issue: On S3 resume screen is blank.  I've tracked this down to 2 patches:
>>>
>>> 1. 24576d23976746cb52e7700c4cadbf4bc1bc3472
>>>
>>> drm/i915: enable VT switchless resume v3
>>>
>>> This commit stops the screen from turning back on. Without the patch the
>>> screen resumes back to on, however it is filled with random vertical lines.
>>>
>>> 2. fa55583797d12b10928a1813f3dcf066637caf5e
>>>
>>> drm/i915: fixup the plane->pipe fixup code
>>>
>>> I have to manually revert this.  If I don't I get the random vertical
>>> lines on resume.
>>>
>>> Any ideas on how to address these two issues that cause S3 resume to
>>> leave the HP mini in a broken state?
>>
>> Please file a bug report on bugs.freedesktop.org against DRI ->
>> DRM(Intel). Also please always cc relevant mailing lists when
>> reporting kernel issues.
> 
> Are you using X with a recent (well not ancient) X driver?  

xserver-org-video-intel, 2:2.99.904-0ubuntu2

> Do you have
> any other console drivers built in, like vesafb?

None that I can observe.