On Sun, Oct 20, 2013 at 10:43:57PM +0200, Grethus Bode wrote:
> Hello dri developer,
>
> I have a laptop (Acer Aspire 5336) which needs the i915.invert_brightness=1 option set to get the brightness correct.
>
> running Linux 3.7.10-1.16-desktop, openSUSE 12.3 (Dartmouth) (i586)
>
> Via modinfo i915 I found this mail address and a note to send some info if my machine needed this option.
>
> Via hwinfo --gfxcard I got this info, I hope it is enough:
> 09: PCI 02.0: 0300 VGA compatible controller (VGA)
> [Created at pci.319]
> Unique ID: _Znp.LBJf8FUrAvC
> SysFS ID: /devices/pci0000:00/0000:00:02.0
> SysFS BusID: 0000:00:02.0
> Hardware Class: graphics card
> Model: "Intel Mobile 4 Series Chipset Integrated Graphics Controller"
> Vendor: pci 0x8086 "Intel Corporation"
> Device: pci 0x2a42 "Mobile 4 Series Chipset Integrated Graphics Controller"
> SubVendor: pci 0x1025 "Acer Incorporated [ALI]"
> SubDevice: pci 0x048a
> Revision: 0x09
> Driver: "i915"
> Driver Modules: "drm"
> Memory Range: 0x90000000-0x903fffff (rw,non-prefetchable)
> Memory Range: 0x80000000-0x8fffffff (ro,non-prefetchable)
> I/O Ports: 0x4110-0x4117 (rw)
> IRQ: 44 (57336 events)
> I/O Ports: 0x3c0-0x3df (rw)
> Module Alias: "pci:v00008086d00002A42sv00001025sd0000048Abc03sc00i00"
> Driver Info #0:
> Driver Status: i915 is active
> Driver Activation Cmd: "modprobe i915"
> Config Status: cfg=no, avail=yes, need=no, active=unknown
>
> 10: PCI 02.1: 0380 Display controller
> [Created at pci.319]
> Unique ID: ruGf.sdgH25nVSW2
> SysFS ID: /devices/pci0000:00/0000:00:02.1
> SysFS BusID: 0000:00:02.1
> Hardware Class: graphics card
> Model: "Intel Mobile 4 Series Chipset Integrated Graphics Controller"
> Vendor: pci 0x8086 "Intel Corporation"
> Device: pci 0x2a43 "Mobile 4 Series Chipset Integrated Graphics Controller"
> SubVendor: pci 0x1025 "Acer Incorporated [ALI]"
> SubDevice: pci 0x048a
> Revision: 0x09
> Memory Range: 0x93400000-0x934fffff (rw,non-prefetchable)
> Module Alias: "pci:v00008086d00002A43sv00001025sd0000048Abc03sc80i00"
> Config Status: cfg=no, avail=yes, need=no, active=unknown
>
> Primary display adapter: #9
>
> With Regards
We've applied a catch-all w/a patch for all Acer gm45 machines. It'll land
in 3.13 and if it doesn't blow up anywhere we can backport it to stable
kernels. Commit in linux-next is
commit ee1452d7458451a7508e0663553ce88d63958157
Author: Jani Nikula <jani.nikula@xxxxxxxxx>
Date: Fri Sep 20 15:05:30 2013 +0300
drm/i915: assume all GM45 Acer laptops use inverted backlight PWM
Cheers, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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