lkml.org 
[lkml]   [2003]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: Playing with 2.5.63: APM blanking and "bio too big"
>>* 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/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.025 / U:4.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site