[Debian-eeepc-devel] Bug#559578: Bug#559578: Fwd: Bug#559578: eeepc-acpi-scripts: EeePC 701 freezes with garbled screen while booting

[Darren Salt]

I demand that Alan Jenkins may or may not have written...

> On 12/9/09, Darren Salt <linux at youmustbejoking.demon.co.uk> wrote:
>> I demand that Alan Jenkins may or may not have written...
>> [snip]
>>> I think the kernel should disable SHE by default on the 701 models.  I
>>> don't mind if it provides a "force_cpufv" option with an appropriate
>>> warning.
>> And I have no problem with modifying eeepc-acpi-scripts accordingly:
>> adding documentation ("How to break your 701"), and generating a warning
>> and not altering the SHE setting if this option is missing and the script
>> is being run on a 701.
>> We'll need to support current and older kernels for a while yet...
>> [snip]
>>> I don't think it should be left to userspace to get this right.
>> Agreed.
>> [snip]

> Ok. If we use a normal module option, the kernel won't be able to provide
> a warning when it is set at run-time.

I meant the init script for eeepc-acpi-scripts, but having the kernel output
a warning wouldn't be a bad thing.

> Setting module parameters under /sys/module/*/parameters just sets a
> variable; it doesn't call into the module.

True...

> So I guess we want "force_enable_cpufv" as a new sysfs attribute.

Probably, yes. I was thinking along the lines of "you want this, you make
sure that the appropriate line is present in a file in /etc/modprobe.d", but
I think that this will be more supportable in that it's easier for your
average user to test without committing to the change.

-- 
| Darren Salt            | linux at youmustbejoking | nr. Ashington, | Doon
| using Debian GNU/Linux | or ds    ,demon,co,uk    | Northumberland | Army
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