I have an ex-desktop PIII box which now runs as a leafnode News
server. It's up 24/7 and 2.4 and 2.2 kernels are rock solid on it.
However, 2.5 kernels tend to hang the machine when the console screen
blanker kicks in. "Tend to" as in almost but not quite always.
Recently I found that disabling APM_DISPLAY_BLANK eliminates the hangs.
My other boxes don't have any problems with APM_DISPLAY_BLANK, and this
box does run 2.4 fine with APM_DISPLAY_BLANK, so it seems there must
be some change in the 2.5 kernel's APM driver that is problematic on
this particular box.
(UP_APIC, APM, and APM_DO_ENABLE are enabled; IO_APIC, SMP, PREEMPT, ACPI,
and the other APM options are disabled. PCI S3 Trio64V2/DX graphics card.)
/Mikael
On Thu, 16 Jan 2003, Mikael Pettersson wrote:
> However, 2.5 kernels tend to hang the machine when the console screen
> blanker kicks in. "Tend to" as in almost but not quite always.
> Recently I found that disabling APM_DISPLAY_BLANK eliminates the hangs.
>
> My other boxes don't have any problems with APM_DISPLAY_BLANK, and this
> box does run 2.4 fine with APM_DISPLAY_BLANK, so it seems there must
> be some change in the 2.5 kernel's APM driver that is problematic on
> this particular box.
>
> (UP_APIC, APM, and APM_DO_ENABLE are enabled; IO_APIC, SMP, PREEMPT, ACPI,
> and the other APM options are disabled. PCI S3 Trio64V2/DX graphics card.)
I've seen the same thing on a laptop, on my system the display just never
comes back on again, although i can still use it via a serial console or
network. I only know it was CONFIG_APM related because i can't reproduce
without it, i just never looked into it.
Zwane
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