linux-kernel - Re: Weird suspend/resume problem on HP nx6325 w/ openSUSE 11.2 w/ -rc8

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Message-ID: <dd18b0c30911271202m4487eb29jf7fa9fac7e3873bd@mail.gmail.com>
Date:	Fri, 27 Nov 2009 12:02:37 -0800
From:	Justin Mattock <justinmattock@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Dave Airlie <airlied@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	DRI <dri-devel@...ts.sourceforge.net>
Subject: Re: Weird suspend/resume problem on HP nx6325 w/ openSUSE 11.2 w/ 
	-rc8

On Thu, Nov 26, 2009 at 5:04 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> On Sunday 22 November 2009, Dave Airlie wrote:
>> On Sun, Nov 22, 2009 at 9:15 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
>> > Hi,
>> >
>> > I'm not really sure where this should be reported, but here it goes.
>> >
>> > After installing openSUSE 11.2 on my testbed nx6325 I noticed that resume
>> > (from suspend to RAM) stopped working on it.  Apparently, it hanged while
>> > switching from the console back to X and the box remained completely
>> > unresponsive after that (it didn't even react to the magic sysrq).  However,
>> > it used to work just fine with -rc7 and openSUSE 11.1, so I figured the problem
>> > was related to the new X driver, which is radeon module version 6.12.4 (xorg
>> > server 1.6.5).
>> >
>> > So, I started to investigate and found that after a suspend from a framebuffer
>> > console, the resume had always worked.  However, when I switched from X to the
>> > framebuffer console, suspended, resumed and switched back to X, the box hanged
>> > immediately just like during resume after a suspend from under X.  [There also
>> > were some problems when switching from X to the framebuffer console and back
>> > which seemd to be independent of suspend/resume (in short, the screen stays
>> > black after a switch from the framebuffer console to X and you need to kill X
>> > to fix this).]
>>
>> You are using radeonfb on it? or vesafb?
>
> vesafb
>
>> first test is to try without either of those installed.
>
> That doesn't change the behavior AFAICS.
>
>> From memory though that machines an Xpress 200M
>
> Yes, it has this one.
>
>> which is the the worst graphics card for use with open drivers and has
>> always caused no-end of pain.
>
> Too bad. :-(
>
>> Its also mostly undocumented when it comes to errata and workarounds.
>
> Well, so I guess this is a hardware errata.
>
> Still, it worked with the older X, so I wonder if I can make the new X work
> like the old one?
>
> Best,
> Rafael
> --
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>

>From over here I was running the stable kernel
on a freshly built clfs system, with the latest xorg from git
suspend worked as is. Then loading the latest git kernel
noticed the lagging of the wake up. When I get a chance I'll
do a bisect and see If I come up with anything.


-- 
Justin P. Mattock
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