[Bug 77767] intel framebuffer broken by d978ef14456a38034f6c0e94a794129501f89200 in kernel 3.15-rc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77767

--- Comment #5 from Knut Petersen <Knut_Petersen at t-online.de> ---
There is one difference in the Xorg logs:

xserver with kernel 3.14.1  finds some more outputs:


[    32.462] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
        i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
        915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
        Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
        GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[    32.463] (II) intel: Driver for Intel(R) HD Graphics: 2000-5000
[    32.463] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100
[    32.463] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200
[    32.464] (--) using VT number 2

[    32.502] (II) intel(0): SNA compiled from 2.99.911-80-gfd05790
[    32.508] (--) intel(0): Integrated Graphics Chipset: Intel(R) 915GM
[    32.508] (--) intel(0): CPU: x86, sse2
[    32.508] (II) intel(0): Creating default Display subsection in Screen
section
        "Default Screen Section" for depth/fbbpp 24/32
[    32.508] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[    32.508] (==) intel(0): RGB weight 888
[    32.508] (==) intel(0): Default visual is TrueColor
[    32.509] (**) intel(0): Framebuffer tiled
[    32.509] (**) intel(0): Pixmaps tiled
[    32.509] (**) intel(0): "Tear free" disabled
[    32.509] (**) intel(0): Forcing per-crtc-pixmaps? no
[    32.509] (--) intel(0): Using a maximum size of 64x64 for hardware cursors
[    32.509] (II) intel(0): Output VGA1 has no monitor section
[    32.509] (II) intel(0): Output DVI1 has no monitor section
[    32.509] (II) intel(0): Output TV1 has no monitor section
[    32.509] (II) intel(0): Output TV2 has no monitor section
[    32.510] (II) intel(0): Output TV3 has no monitor section
[    32.510] (II) intel(0): Output VGA2 has no monitor section
[    32.510] (II) intel(0): Output TV4 has no monitor section
[    32.510] (II) intel(0): Output VIRTUAL1 has no monitor section
[    32.510] (--) intel(0): Output DVI1 using initial mode 1280x1024 on pipe 0
[    32.510] (==) intel(0): DPI set to (96, 96)
[    32.510] (II) Loading sub module "dri2"
[    32.510] (II) LoadModule: "dri2"


This is relevant part of the first broken kernel version:

[    38.203] (II) intel(0): Output VGA1 has no monitor section
[    38.203] (II) intel(0): Output DVI1 has no monitor section
[    38.206] (II) intel(0): Output TV1 has no monitor section
[    38.206] (II) intel(0): Output VIRTUAL1 has no monitor section
[    38.206] (--) intel(0): Output DVI1 using initial mode 1280x1024 on pipe 0


xrandr with that kernel:

knut at golem:~> xrandr
Screen 0: minimum 8 x 8, current 1280 x 1024, maximum 32767 x 32767
VGA1 disconnected (normal left inverted right x axis y axis)
DVI1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis)
337mm x 270mm
   1280x1024     60.02*+
   1024x768      60.00  
   800x600       60.32  
   640x480       60.00  
   720x400       70.08  
TV1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
knut at golem:~> 


The video mode is always correctly set to 1280x1024, it's only used
incorrectly...

Switching between X and fb console does not cure anything

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