[Bug 73530] Asus U38N: Black screen with Radeon driver in Linux 3.10, 3.11 and 3.12

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=73530

--- Comment #9 from Paul Menzel <paulepanter@users.sourceforge.net> ---
Applying your patch to disable ss to Linux 3.13-rc8 worked. The monitor
displays now something even with KMS. Thanks!

It could still be that something else fixed it in Linux 3.13-rc8 which was not
yet in 3.12.6. I’ll post the logs so you can decide.

$ git log --format=oneline | head -2
9e6494b67886c1bf7ba5834ac43beb6d82661876 patch by Alex Deucher
a6da83f98267bc8ee4e34aa899169991eb0ceb93 Merge branch 'merge' of
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
$ xrandr -q --verbose
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (0x57) normal (normal left inverted right x
axis y axis) 282mm x 165mm
    Identifier: 0x53
    Timestamp:  139873
    Subpixel:   horizontal rgb
    Gamma:      1.0:1.0:1.0
    Brightness: 1.0
    Clones:    
    CRTC:       0
    CRTCs:      0 1 2 3
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter: 
    EDID: 
        00ffffffffffff000dae431300000000
        34150104a51c10780293ada9534c9625
        114f5300000001010101010101010101
        010101010101363680a0703820402e1e
        24001aa510000018242480a070382040
        2e1e24001aa510000018000000fe0043
        4d4e0a202020202020202020000000fe
        004e3133334853452d4541310a2000cd
    scaling mode: Full 
        supported: None, Full, Center, Full aspect
  1920x1080 (0x57)  138.8MHz -HSync -VSync *current +preferred
        h: width  1920 start 1966 end 1996 total 2080 skew    0 clock   66.7KHz
        v: height 1080 start 1082 end 1086 total 1112           clock   60.0Hz
  1920x1080 (0x58)   92.5MHz -HSync -VSync
        h: width  1920 start 1966 end 1996 total 2080 skew    0 clock   44.5KHz
        v: height 1080 start 1082 end 1086 total 1112           clock   40.0Hz
  1680x1050 (0x59)  146.2MHz -HSync +VSync
        h: width  1680 start 1784 end 1960 total 2240 skew    0 clock   65.3KHz
        v: height 1050 start 1053 end 1059 total 1089           clock   60.0Hz
  1400x1050 (0x5a)  121.8MHz -HSync +VSync
        h: width  1400 start 1488 end 1632 total 1864 skew    0 clock   65.3KHz
        v: height 1050 start 1053 end 1057 total 1089           clock   60.0Hz
  1280x1024 (0x5b)  109.0MHz -HSync +VSync
        h: width  1280 start 1368 end 1496 total 1712 skew    0 clock   63.7KHz
        v: height 1024 start 1027 end 1034 total 1063           clock   59.9Hz
  1440x900 (0x5c)  106.5MHz -HSync +VSync
        h: width  1440 start 1528 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz
  1280x960 (0x5d)  101.2MHz -HSync +VSync
        h: width  1280 start 1360 end 1488 total 1696 skew    0 clock   59.7KHz
        v: height  960 start  963 end  967 total  996           clock   59.9Hz
  1280x854 (0x5e)   89.2MHz -HSync +VSync
        h: width  1280 start 1352 end 1480 total 1680 skew    0 clock   53.1KHz
        v: height  854 start  857 end  867 total  887           clock   59.9Hz
  1280x800 (0x5f)   83.5MHz -HSync +VSync
        h: width  1280 start 1352 end 1480 total 1680 skew    0 clock   49.7KHz
        v: height  800 start  803 end  809 total  831           clock   59.8Hz
  1280x720 (0x60)   74.5MHz -HSync +VSync
        h: width  1280 start 1344 end 1472 total 1664 skew    0 clock   44.8KHz
        v: height  720 start  723 end  728 total  748           clock   59.9Hz
  1152x768 (0x61)   71.8MHz -HSync +VSync
        h: width  1152 start 1216 end 1328 total 1504 skew    0 clock   47.7KHz
        v: height  768 start  771 end  781 total  798           clock   59.8Hz
  1024x768 (0x62)   63.5MHz -HSync +VSync
        h: width  1024 start 1072 end 1176 total 1328 skew    0 clock   47.8KHz
        v: height  768 start  771 end  775 total  798           clock   59.9Hz
  800x600 (0x63)   38.2MHz -HSync +VSync
        h: width   800 start  832 end  912 total 1024 skew    0 clock   37.4KHz
        v: height  600 start  603 end  607 total  624           clock   59.9Hz
  848x480 (0x64)   31.5MHz -HSync +VSync
        h: width   848 start  872 end  952 total 1056 skew    0 clock   29.8KHz
        v: height  480 start  483 end  493 total  500           clock   59.7Hz
  720x480 (0x65)   26.8MHz -HSync +VSync
        h: width   720 start  744 end  808 total  896 skew    0 clock   29.9KHz
        v: height  480 start  483 end  493 total  500           clock   59.7Hz
  640x480 (0x66)   23.8MHz -HSync +VSync
        h: width   640 start  664 end  720 total  800 skew    0 clock   29.7KHz
        v: height  480 start  483 end  487 total  500           clock   59.4Hz
VGA-0 disconnected (normal left inverted right x axis y axis)
    Identifier: 0x54
    Timestamp:  139873
    Subpixel:   no subpixels
    Clones:    
    CRTCs:      0 1 2 3
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter: 
    load detection: 1 
        range: (0, 1)
HDMI-0 disconnected (normal left inverted right x axis y axis)
    Identifier: 0x55
    Timestamp:  139873
    Subpixel:   horizontal rgb
    Clones:    
    CRTCs:      0 1 2 3
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter: 
    dither: off 
        supported: off, on
    audio: auto 
        supported: off, on, auto
    underscan vborder: 0 
        range: (0, 128)
    underscan hborder: 0 
        range: (0, 128)
    underscan: off 
        supported: off, on, auto
    coherent: 1 
        range: (0, 1)

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