Re: Bug#757604: Connectors for additional monitors not recognized in new laptop

[Carlos Kosloff <ckosloff@hardwarealien.com>]

Thank you very much for answer.
I attempted to download and burn latest Knoppix with 3.15 but very 
difficult to get latest version, mirrors don't have it yet.
Will have to try latest siduction kernel, give me some time to install it.
In the meantime, here is output of xrandr with HDMI Viewsonic monitor 
VX2252mh connected:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1600 x 900, current 1600 x 900, maximum 1600 x 900
default connected primary 1600x900+0+0 0mm x 0mm
   1600x900       0.00*

As you can see, it only reports Screen 0.
Will be back here shortly.

On 08/09/2014 10:52 PM, Michel Dänzer wrote:
> On 10.08.2014 03:19, Carlos Kosloff wrote:
> > Graphics:  Card: Advanced Micro Devices [AMD/ATI] Mullins [Radeon APU
> > A4-6000 with R2 Graphics]
> >             Display Server: X.Org 1.16.0 drivers: fbdev,ati,radeon
> > (unloaded: vesa)
> >             Resolution: 1600x900@0.00hz
> >             GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.4, 128 bits)
> > GLX Version: 3.0 Mesa 10.2.4
> >
> > Machine:   System: TOSHIBA product: Satellite C75D-B v: PSCLEU-003002
> >             Mobo: TOSHIBA model: Portable PC v: MP Bios: Insyde v: 1.10
> > date: 04/30/2014
> >
> > CPU:       Quad core AMD A6-6310 APU with AMD Radeon R4 Graphics (-MCP-)
> > cache: 8192 KB
> >             Clock Speeds: 1: 1000 MHz 2: 1800 MHz 3: 1000 MHz 4: 1000 MHz
> >
> > RAM:    8 Gb 1333Ghtz
> >
> > Branch : jessie/sid, sources set to "testing"
> >
> > Kernel: linux-image-3.14-2-amd64
> >
> > Problem: this laptop does not recognize additional monitors, not VGA nor
> > HDMI.
> > I have been told that the kernel I am using is not suitable for this GPU
> > and that I need kernel 3.16.
> > Mullins support already went into 3.15 AFAICT, but it definitely wasn't
> > in 3.14 yet.
> >
> > In Debian this kernel is only in experimental, an rc marked as buggy,
> > however, this kernel has gone stable and siduction derivative has it.
> > I am not sure if loading this kernel will solve problem, or if problem
> > is in drivers.
> Can you try a 3.15 or 3.16 kernel? The ati/radeon Xorg driver can't work
> without the corresponding kernel support.