Ok, maybe their marketing is just retarded and misleading (go figure), it appears to be same as mine, 16384x16384.  They really should just say this in marketing.  That gives me 4x wide possible at 4k, which I've considered, I *can* add another to mine with 4x dp ports.

Maybe I will try nvidia after all, as yours is the first confirmation I've been able to find really on a 9xx or higher nvidia.  Thanks a ton for that.

My experience isn't bad by most means with this amd solution *now*, which is odd and impressive for this card released in 2010 I think.  Every 4k recommendation says you need a nvidia gtx9xx, which just isn't true, other than the one stingy hdmi2.0 port they come with. 

Drivers were the worst of it, fglrx was always buggy with compositing at 6x monitors wide, kwin had the least suck.  Most games never worked with fglrx, or didn't for long.  I wanted plasma 5 kde, so I moved to 16.04, which fglrx didn't support at the time, which forced moving to radeon/mesa drivers.  Much better surprisingly, especially with dri3, and I can play almost any game I've tried like Saint's Row, Witcher 2, Star Conflict, Portals, etc at 4k resolutions, including more stable compositing (at the same time!).  I've actually taken to playing some games again as a result.

This showed me I should never have faith in amd/ati to ever fix their own linux drivers, not when reverse engineering them after 20 years oss drivers finally are better with little help of their own.  I know the amd-gpu project is trying to fix it, but at this point I'd rather just abandon amd if nvidia's drivers/cards *are* better, and finally support my desktop config.

Now if I can find a 1070 card less than retail (ie reasonably priced) once scalpers stop soaking them up.  Scalpers do this for HTC Vive VR's too - they need to die.  I can't pick one up used cheap if no one has grown disgruntled with them yet.

-mb


On 06/23/2016 10:01 AM, Brian Cluff wrote:
I get:
$ xrandr -q
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
   3840x2160     60.00*+  59.94    50.00    29.97    25.00    23.98 
   4096x2160     59.94    50.00    29.97    25.00    24.00    23.98 
   1920x1080     60.00    59.94    50.00    29.97    25.00    23.97    60.00    50.04 
   1680x1050     59.95 
   1600x900      60.00 
   1440x900      59.89 
   1366x768      59.79 
   1280x1024     75.02    60.02 
   1280x800      59.81 
   1280x720      60.00    59.94    50.00 
   1152x864      75.00 
   1024x768      75.03    70.07    60.00 
   800x600       75.00    72.19    60.32 
   720x576       50.00    50.08 
   720x480       59.94    60.05 
   640x480       75.00    72.81    59.94 
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)

Brian Cluff

On 06/23/2016 12:13 AM, Michael Butash wrote:
I'd love to be wrong here, but for years nvidia imposed a limitation of only 2 monitors possible at all when I was already doing 6x wide with ati on a 5870 card.  As buggy as fglrx tended to be, it mostly worked as a desktop in ways nvidia seemingly could only dream.

What does this show on yours for the first line?  The maximum is relevant here.

mb@host:~$ xrandr -q
Screen 0: minimum 320 x 200, current 11520 x 2160, maximum 16384 x 16384

-mb