Re: Thinkpad Z60T suspend to ram

[Florian Kulzer <florian@molphys.leidenuniv.nl>]

Lei Kong wrote:
> Hi,
>
> I have problems with getting suspend-to-ram/resume work on
> my thinkpad z60t. When resuming, it always gave me a blank screen.
> I know the machine is running because I can ssh onto it.
>
> Z60T comes with Intel 915GM display controller, and I am using
> the i810 driver shipped with xorg.6.8.2. My login manager is kdm.
> The kernel is 2.6.15 compiled from source, with acpi and thinkpad
> acpi extra built-in. I also installed the debian hibernate and vbetool
> packages.
>
> The suspend-to-ram process looks fine. I tried the workaround
> on thinkwiki, saving display state to a temp file and recovering
> when resuming, but it didn't work. Some resuming information
> (acpi ...) was diplayed first, then the screen still went blank.
> I have tried both the hibernate script with configuration to suspend
> to ram and echo 'mem' > /sys/power/state.
>
> Some says the problem is due to the lack of power management of sata
> driver, but that is not my case, since my machine does not hang when
> resuming, as described.
>
> The following is my /etc/hibernate/hibernate.conf
>
> UseSysfsPowerState mem
> Verbosity 0
> LogFile /var/log/hibernate.log
> LogVerbosity 1
> SaveClock restore-only
> UnloadBlacklistedModules yes
> LoadModules auto
> DownInterfaces eth0
> UpInterfaces auto
> EnableVbetool yes
> SwitchToTextMode yes

Does your display problem occur when you suspend/resume from a virtual
terminal or only when you suspend X? If the problem is with X then the
option "UseDummyXServer yes" in hibernate.conf might fix it. Generally I
would recommend to start from the hibernate.conf which is shipped with
Debian and incorporate your changes/additions. I think the Debian
developers have spent quite some time to tweak this configuration file
and there are a number of comments about additional X-related options
which might be helpful.

Regards,
           Florian