[linux-laptop] RE: S3 slow resume

Wed Oct 26 23:29:15 EDT 2005

i havent been able to find a boot parameter that disables dma in

linux/Documentation/kernel-parameters.txt, but i found this:

"ATAPI_DMA_DISABLE=YES" with google, i tried and a "hdparm /dev/hda" showed that dma was still enabled and being used. i'm not sure why disabling dma from startup would solve the problem, "hdparm -d0 /dev/hda" seems to do just fine. i'm going to try recompiling my kernel without dma support, but i dont think it will make much difference.

 --- On Wed 10/26, Keith Roberts < keith at kar.eclipse.co.uk > wrote:

From: Keith Roberts [mailto: keith at kar.eclipse.co.uk]

To: slinky1776 at excite.com

Date: Wed, 26 Oct 2005 23:00:28 +0100 (BST)

Subject: Re: [linux-laptop] RE: S3 slow resume

Well, I'm using a different Linux distro, but you might like to try the following. Don't use hdparm as it is not compatible with all IDE drives. Check the documentation for details. Try turning off dma via a Linux kernel paramater at boot time, if your distro supports this. Let me know if this helps! Kind Regards - Keith On Wed, 26 Oct 2005, sdfa wrote: > To: linux-laptop at mobilix.org > From: sdfa <slinky1776 at excite.com> > Subject: [linux-laptop] RE: S3 slow resume > > > i've tried turning dma off with "hdparm -d 0 /dev/hda" and then sleeping/resuming with the same results. i've also read that enabling "Use multi-mode by default" in my kernel would fix errors like the ones reported, but it hasn't worked for me. > > > > --- On Tue 10/25, sdfa < slinky1776 at excite.com > wrote: > > From: sdfa [mailto: slinky1776 at excite.com] > > To: linux-laptop at mobilix.org > > Date: 
Tue, 25 Oct 2005 16:12:28 -0400 > > Subject: S3 slow resume > > > > i've got a sony vaio with slackware 10.2 and a 2.6.13.4 kernel on it. i've been pretty successful getting S4 to work but i've had a few issues resuming from S3. Basically, this is what happens when i do an "echo mem > /sys/power/state": it goes into sleep mode: my power indicator light starts slowly blinking red(i guess that means it's asleep, i think it did this with standby in windows, too). without the acpi_sleep=bios_s3 parmaeter, when i hit a key, the light turns green(like it's back on) but the screen doesn't come back. with the parameter it resumes like this: [code] inu Back to C! ipw2200 error -22 ACPI: PCI Interrupt 0000:00:02.0 ... [/code] is that normal? the "inu" and "back to c!" stuff seem kinda wierd. after this wakeup stuff(about 30 seconds), i get a prompt and anything i enter in it just kinda ... does nothing. so its 
like: [code] root at slink:~# ls <return> <blank line> <return> <blank line> <return> <blan k > line> <return> <blank line> <return> <blank line> <return> asdfdsaf wtf ?????? <blank line> <return> <blank line> <return> <blank line> <return> [/code] its as if i'm in a program that has crashed and i cant break out of it. at this point i still have keyboard control, etc. but i cant ctrl+alt+del to reboot and i cant actually do anything. after about 2 minutes of this, i hear a little whir(the hd spin up maybe?) and everything works(successful suspend/resume) but that's way too long, i could have used S4 and resumed faster than that. is there anything i can do to speed up my resume from S3? _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web! > > _______________________________________________ > Join Excite! - 
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