linux-kernel - Re: [PATCH] acpi/video: Don't restore backlight to 0 at boot time

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 24 May 2012 00:13:40 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	linux-kernel@...r.kernel.org, Bdale Garbee <bdale@....com>
Subject: Re: [PATCH] acpi/video: Don't restore backlight to 0 at boot time

Matthew Garrett <mjg59@...f.ucam.org> writes:

> ACPI arguably does define 0 as being off (this is exceedingly poorly 
> defined), but I'm not entirely happy with this - the firmware makes its 
> behaviour conditional on the OS version. I'd really like to see an 
> updated version of the Intel opregion spec to get a better idea of what 
> we're meant to be doing here, but the last one made public was
> ancient.

Kernel 3.4 continues to break on this machine; I'd love to know how to
get a suitable fix upstreamed...

-- 
keith.packard@...el.com

Content of type "application/pgp-signature" skipped