[Bug 83459] New: Dual display Lenovo IdeaPad y510p requires i915.invert_brightness=1 to not dim screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83459

          Priority: medium
            Bug ID: 83459
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Dual display Lenovo IdeaPad y510p requires
                    i915.invert_brightness=1 to not dim screen
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: pietrushnic at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

As advised on dri-devel at lists.freedesktop.org by Jani Nikula I would like to
report that my Lenovo IdeaPad requires i915.invert_brightness=1 kernel
parameter to not dim screen after boot. According to Jani 'this is highly
unlikely to be the case on' my hardware. I use dual display with Samsung
SyncMaster 931BF, latest kernel (3.17.0-rc3+) and Debian Jessie/Sid.

[12:39:34] pietrushnic:~ $ lspci -s 00:02.0  -vmm                               
Slot:   00:02.0                                                                 
Class:  VGA compatible controller                                               
Vendor: Intel Corporation                                                       
Device: 4th Gen Core Processor Integrated Graphics Controller                   
SVendor:        Lenovo                                                          
SDevice:        Device 3801                                                     
Rev:    06                                                                      

[12:39:58] pietrushnic:~ $ lspci -s 00:02.0  -vmm -n                            
Slot:   00:02.0                                                                 
Class:  0300                                                                    
Vendor: 8086                                                                    
Device: 0416                                                                    
SVendor:        17aa                                                            
SDevice:        3801                                                            
Rev:    06 

If you need more information I would be glad to help with debugging and
testing.

Regards,
Piotr Król

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