On Sat 2008-08-23 17:47:10, Simon Arlott wrote: > On 12/08/08 11:31, Pavel Machek wrote: >> On Sat 2008-08-09 15:42:22, Simon Arlott wrote: >>> On 08/08/08 12:20, Simon Arlott wrote: >>>> On Fri, August 8, 2008 08:14, Pavel Machek wrote: >>>>> On Mon 2008-08-04 22:56:07, Simon Arlott wrote: >>>>>> My system (Tyan S2923-E, dmesg attached) suspends ok in >>>>>> all pm_test modes, but it won't resume with pm_test >>>>>> "none". >>>>>> >>>>>> [ 6.423515] mem full: hash matches >>>>>> >>>>>> When I press the power button, the port 80 display shows: >>>>>> FF D0 23 01 D0 ... DE >>>>>> (and again each time I press it) >>>>>> >>>>>> If I force it to turn off, then on again: >>>>>> FF D0 23 01 D0 ... FF D0 23 01 D0 ... (D2?) D3 00 01 D5 >>>>>> D6 <normal boot> >>>>>> >>>>>> Any ideas? (onboard SAS is disabled, watchdog is >>>>>> disabled, everything else is enabled, PCI-E graphics >>>>>> card) >>>>> >>>>> Try verifying if it reaches assembly code under realmode/ ... >>> >>> I've tried acpi_sleep=s3_beep, and this: >>> diff --git a/arch/x86/kernel/acpi/realmode/wakeup.S b/arch/x86/kernel/acpi/realmode/wakeup.S >>> Which doesn't work either. >> >> Yep, that should work. When it does not, it means BIOS is not >> returning to our real mode code :-(. You may want to try disabling >> APIC and similar stuff, in hope of working around BIOS bug you are >> hitting, but ... > > I've tried the simplest possible 32-bit UP kernel I could come up with > (.config attached) and it still doesn't work. > > (I modified post_init() to call pm_suspend(PM_SUSPEND_MEM).) > > Disassembly of the BIOS shows that DE is indeed part of 0xDEAD, but I > haven't been able to tell what it's doing between D0 and there... not all > of the port 80 codes that are displayed are easily visible. > > I've tried disabling all the CPU options in the BIOS, e.g. microcode > update, VM, NMI but it doesn't help. I'm wondering if D0 is the right start > point for the system - there's a DC code for S3 resume: ...you did a lot of work, but these issues are hard. Do Windows suspend/resume on same hardware? BSD? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
