[ltp] Success on suspend for ThinkPad T23!!! - Kernel 2.6.10 and more so 2.6.11 rocks the house

[Michael Perry]

On 03/11/2005 01:45 PM, Martin Steigerwald wrote:
> Hello,
> 
> I now compiled a kernel 2.6.10 and then a kernel 2.6.11 from kernel.org 
> based on the config file from Michael Perry. Thanks Michael for your 
> help. 
> 
> I enabled suspend to disk, isdn4linux with AVM and Teles PCMCIA cards, 
> XFS, cpu frequency scaling, UDF filesystem, framebuffer console support 
> and some other goodies. But this time I didn't insist on building an 
> initrd image, but compiled everything required to boot statically.
> 
> I applied ACPI patches from 2004-03-09.
> 
> Well and it works. More than ever:
> 
> 1) suspend to ram works
> 
> 2) suspend to disks works finally. Michael, this was not enabled in your 
> config file. I enabled it. 
> 
> 3) there is no clock drift with 2.6.11, but there is clock drift with 
> 2.6.10 even when CONFIG_X86_PM_TIMER is set. Hmmm, I have 
> CONFIG_X86_PM_TIMER=y also for the 2.6.11 image. I think I will try with 
> setting it to no in the next days.
> 
> 4) my Mercury PCMCIA USB 2.0 (NEC chipset) controller works properly after 
> suspend
> 
> BTW I used KDE laptop daemon stuff in the kicker bar to initiate the 
> actual suspend process. I did not fiddle with ACPI suspend scripts yet. 
> 
> Here is still some things that do not yet fully work:
> 
> 1) ALSA sound is quiet after suspend. "/etc/init.d/alsa restart" restores 
> it so that I can hear it again. Michael, you told me it works out of the 
> box after suspend on your setup, didn't you? I wonder what might be the 
> difference.
> 
> 2) The AVM Fritzcard A1 PCMCIA does not work after suspend. Pulling it out 
> and plugging it back in and a "/etc/init.d/isdn restart" makes it 
> functional again.  (I don't use isdnutils but RedHat's GUI based 
> isdn-config that Klaus Knopper ported to Knoppix.)
> 
> 3) Console framebuffer support doesn't survive a suspend. When I switch to 
> console after suspend I get graphics garbage. I can not see a cursor or 
> any text. Omitting the "vga=" parameter from GRUB and thus using standard 
> console does work however.
> 
> Issue 1 and 2 should be solvable by the right ACPI scripts (that hopefully 
> integrate well with KDE's ACPI support). Issue 3 isn't that important to 
> me.
> 
> Well I am quite satisfied. 
> 
> Next thing would be to try with 2.6.11.2 or whatever is the most recent 
> stable patch for 2.6.11 beginning of next week. And reporting the 
> remaining problems to bugzilla at kernel.org or ACPI at sourceforge.net
> 
> Thanks for all the help. At last I got it working! I am willing to 
> document what I did and post my kernel config file to the ThinkPad wiki 
> as soon as I find time. 
> 
> For anyone who wants a copy of my kernel config file that is based on 
> Michael's one in the mean time please just drop me a note. 
> 

Hi Martin-

Very nice work!  I am gonna move my thinkpad to 2.6.11 this weekend I 
think.  I got a bit distracted with a few other things but I'm about 
ready to head down that path myself.

As far as sound goes, my T23 comes back with sound working with no real 
additions to things so I don't quite get it.  I'm gonna also use some of 
the additions you made with the config you sent me.  Much appreciated!

Looks like many of the issues with the T23s are getting resolved with 
the newer kernels.  I still have the time drift issue which plagues the 
laptop so I want to get past that particularly.

I'm thinking I will give 2.6.11 a try here soon.


-- 
Michael Perry | do or do not. There is no try. -Master Yoda
mperry@lnxpowered.org | http://www.lnxpowered.org