Messages in this thread Patch in this message | | | Date | 1 Mar 2003 17:25:39 -0000 | From | linux@horizon ... | Subject | Re: Playing with 2.5.63: APM blanking and "bio too big" |
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>>* I had real problems with APM screen blanking enabled. It reliably >> and repeatedly locked the machine HARD (no keyboard, no SysRq, no ping) >> when the scren blanker kicked in or trying to switch from X. This is >> an Athlon on a KT133 Motherboard. No problems in 2.4. APM can corectly >> power the machine off, however.
> Do you have CONFIG_X86_UP_APIC=y?
Right in one!
> To verify, hack apic.c and ensure that "dont_enable_local_apic_timer" > is initialised to 1. Also don't enable the NMI watchdog.
I'll try that. Thanks!
> Another option, which is what I use now on all my local-APIC capable > machines, is to disable APM_DISPLAY_BLANK.
What I'm running now, and now that I understand, probably preferable. Maybe a warning in Configure.help?
--- arch/i386/Kconfig 2003-02-24 14:05:10.000000000 -0500 +++ arch/i386/Kconfig.new 2003-03-01 12:23:59.000000000 -0500 @@ -922,6 +922,10 @@ backlight at all, or it might print a lot of errors to the console, especially if you are using gpm. + This also tends to interact badly with use of the local APIC. + You probably don't want this option unless you are building + for a laptop that you intend to use in text mode. + config APM_RTC_IS_GMT bool "RTC stores time in GMT" depends on APM
Or should Linux mask the APIC timer before making the APM call?
> I really despise BIOS writers.
The BIOS interface is... non-obvious. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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