From: Grant <emailgrant@gmail.com>
To: Gentoo mailing list <gentoo-user@lists.gentoo.org>
Subject: [gentoo-user] Backlight problems
Date: Sun, 4 Mar 2012 13:16:58 -0800 [thread overview]
Message-ID: <CAN0CFw3QwXwMA9-PGXVg+0w2u+WKw9U4zeah3O_FWjgJUkZ8SA@mail.gmail.com> (raw)
On my just-released Dell XPS 13 Ultrabook, I can control the backlight
with 'xbacklight -set 0' and 'xbacklight -set 100'. Any other values
cause the screen to blink and flash. The keyboard backlight shortcuts
don't work unless I map them to xbacklight 0 and 100. Also xbacklight
doesn't work at all if I'm unplugged from AC. I've tried
acpi_osi=Linux and acpi_backlight=vendor in grub.conf. acpi_osi
doesn't seem to make any difference and xbacklight doesn't work at all
without acpi_backlight. Do I just need to wait for a newer kernel?
- Grant
next reply other threads:[~2012-03-04 21:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-04 21:16 Grant [this message]
2012-03-05 0:38 ` [gentoo-user] Re: Backlight problems walt
2012-03-05 1:14 ` Grant
2012-03-16 17:58 ` Grant
2012-03-16 18:15 ` Mark Knecht
2012-03-16 18:55 ` Grant
2012-03-16 19:25 ` Mark Knecht
2012-03-16 19:33 ` Mark Knecht
2012-03-16 20:06 ` Grant
2012-03-16 22:36 ` Neil Bothwick
2012-03-17 0:11 ` Grant
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