linux-kernel - Re: Lenovo ThinkPads need acpi

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Message-ID: <20080114003553.GA1698@srcf.ucam.org>
Date:	Mon, 14 Jan 2008 00:35:54 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Pavel Machek <pavel@....cz>, Len Brown <lenb@...nel.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Lenovo ThinkPads need acpi_osi="Linux"

On Sun, Jan 13, 2008 at 09:41:29PM -0200, Henrique de Moraes Holschuh wrote:
> On Sun, 13 Jan 2008, Pavel Machek wrote:
> > When linux calls video BIOS with lcall (acpi_sleep=s3_bios), they
> > should turn on backlight and put video into text mode. They should
> > also make sure mode setting works after that.
> 
> IMHO, in that case, we should probably be whitelist-enabling that on
> thinkpads (and allow for acpi_sleep=none to override it), or letting
> userspace change it at runtime.

No. This breaks on the R50e, at least - I suspect it'd also have 
problems on any nvidia based machines, but I don't have one to hand at 
the moment. It can be set at runtime already.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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