linux-kernel - Brightness control fails between 3.6.8 and 3.7.0-rc7 (Intel 915/Dell Vostro 3560)

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-next>] [day] [month] [year] [list]

Message-ID: <1328143975.121508.1354405791738.JavaMail.root@elliptictech.com>
Date:	Sat, 1 Dec 2012 18:49:51 -0500 (EST)
From:	Tom St Denis <tstdenis@...iptictech.com>
To:	linux-kernel@...r.kernel.org
Cc:	daniel.vetter@...ll.ch, mjg59@...f.ucam.org
Subject: Brightness control fails between 3.6.8 and 3.7.0-rc7 (Intel
 915/Dell Vostro 3560)

Hello all,

Somewhere between v3.6.8 [vanilla] and 3.7.0-rc7 the ability to control the LCD brightness was broken on this laptop [details below].  Basically it locks the brightness as full brightness and cannot be changed.  It works properly in v3.6.8 though [and below...].

Details:

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
	Subsystem: Dell Device 056e
	Flags: bus master, fast devsel, latency 0, IRQ 44
	Memory at c3000000 (64-bit, non-prefetchable) [size=4M]
	Memory at b0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 5000 [size=64]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
	Capabilities: [d0] Power Management version 2
	Capabilities: [a4] PCI Advanced Features
	Kernel driver in use: i915

This is on a Dell Vostro 3560/0C05GV

I have the discrete radeon turned off [via vgaswitcheroo].  I have dell_wmi and dell_laptop loaded.  I use the same kernel config between the two builds.

Tom
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/