Re: Suspend on Lenovo 3000 V200 - Linux 2.6.25rc8

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Monday, 7 of April 2008, nikosapi wrote:
> On April 6, 2008 16:21:57 Rafael J. Wysocki wrote:
> > On Sunday, 6 of April 2008, Nick Nobody wrote:
> > > Hello,
> >
> > Hi,
> >
> > > I'm trying to get suspend working properly on my Lenovo 3000 V200. I'm
> > > using Linux 2.6.25rc8 and the latest xf86-video-intel. Before I was
> > > using kernel-2.6.23.15-137.fc8, xorg-x11-drv-i810-2.1.1-8.fc8 and
> > > suspend worked perfectly.
> > >
> > > The laptop will go to sleep properly but it doesn't seem to enjoy
> > > waking up. When it starts up it will either display a black screen and
> > > remain frozen or I will end up at a virtual term login prompt but when
> > > I put in my username it never prompts me for my password.
> > >
> > > The only way to get suspend working reasonably well is to first
> > > hibernate and then suspend. After a hibernation suspend seems to work
> > > fine :S
> > >
> > > I'm a real noob when it comes to figuring out these sort of things, so
> > > any pointers on things I could try would be much appreciated.
> > >
> > > Here's what s2ram has to say about my hardware:
> > > Machine is unknown.
> > > This machine can be identified by:
> > >     sys_vendor   = "LENOVO"
> > >     sys_product  = "07642CU"
> > >     sys_version  = "LENOVO3000 V200"
> > >     bios_version = "65ET32WW (1.06 )"
> > >
> > > Here's the output of dmidecode: http://pastebin.ca/973442
> >
> > Can you try to run "echo mem > /sys/power/state" instead of s2ram and see
> > if the symptoms are the same?
> >
> > Also, please try reverting commit 7c0ea45be4f114d85ee35caeead8e1660699c46f
> > (reproduced below for conveninence) and see if that helps.
> >
> > Thanks,
> > Rafael
> >
> > ---
> > commit 7c0ea45be4f114d85ee35caeead8e1660699c46f
> > Author: Zhao Yakui <yakui.zhao@intel.com>
> > Date:   Tue Mar 11 16:56:47 2008 +0800
> >
> >     ACPI: Ignore _BQC object when registering backlight device
> >
> >     According to acpi spec , the objects of  _BCL and _BCM are required if
> >     integrated LCD is present and supports brightness level .The _BQC is
> >     the optional object. So the _BQC object is ignored when the backlight
> > device is registered in ACPI video driver.
> >
> >     http://bugzilla.kernel.org/show_bug.cgi?id=10206
> >
> >     Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
> >     Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
> >     Signed-off-by: Len Brown <len.brown@intel.com>
> >
> > diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
> > index 12cce69..ace958c 100644
> > --- a/drivers/acpi/video.c
> > +++ b/drivers/acpi/video.c
> > @@ -713,7 +713,7 @@ static void acpi_video_device_find_cap(struct
> > acpi_video_device *device)
> >
> >  	kfree(obj);
> >
> > -	if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level
> > > 0){ +	if (device->cap._BCL && device->cap._BCM && max_level > 0) {
> >  		int result;
> >  		static int count = 0;
> >  		char *name;
> > --
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> 
> Hello Rafael,
> 
> I tested with that patch and the problem persists, when the laptop resumes it 
> locks up (with a black screen). If I add acpi_apic_instance=2 acpi_osi=Linux 
> as kernel boot options (as suggested by my dmesg) when it resumes I get back 
> to a virtual term but I'm not able to log in. After entering my username it 
> just hangs there.

Can you please test if the 2.6.24.4 kernel works, then?

Rafael