[Bug 53881] New: Acer 4736Z also needs brightness inverted

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=53881

           Summary: Acer 4736Z also needs brightness inverted
           Product: Drivers
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
        AssignedTo: intel-gfx-bugs at lists.freedesktop.org
        ReportedBy: jani at ubuntu.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No


I just discovered the invert_brightness command line fix today after over a
year of having this bug showing up from time to time :)

This turns the backlight on after booting
sudo setpci -s 00:02.0 F4.B=00

but if using the kernel parameter there is no need for setpci.


Model name: Acer Aspire 4736Z

lspci entries for the two graphics slots, only SDevice is different from the
Aspire 5734Z

Slot:    00:02.0
Class:    0300
Vendor:    8086
Device:    2a42
SVendor:    1025
SDevice:    0260
Rev:    07

Slot:    00:02.1
Class:    0380
Vendor:    8086
Device:    2a43
SVendor:    1025
SDevice:    0260
Rev:    07

I did not have the possibility to build and test a new kernel or I would have
sent a patch.

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