Setting up two monitors on Radeon graphics card

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Setting up two monitors on Radeon graphics card

Postby username1029 » 2018-10-17 09:47

Hi.

I am trying to set up two monitors on my computer, on an AMD Radeon HD 5450 graphics card.
The main monitor is connected by HDMI. The other monitor is connected by DVI.
When both of the monitors are plugged in, the HDMI one works fine - but the DVI monitor screen is black even though it's detected by Xrandr and receives some kind of signal from the computer (it's not in stand-by).

Both monitors are fully functioning. All cables are fully functioning.
All settings are double-checked on both monitors.

I have everything required for it to work, in terms of drivers: firmware-linux-nonfree, firmware-amd-graphics, xserver-xorg-video-amdgpu. All latest version. Running Gallium 0.4 on AMD CEDAR, and XFCE. There are no error messages in dmesg. No Xorg conf file. X has been restarted.

Code: Select all
uname -a
 Linux HOST 4.9.0-8-686-pae #1 SMP Debian 4.9.110-3+deb9u6 (2018-10-08) i686 GNU/Linux

lspci -k
 04:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
 [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series]
 Subsystem: Micro-Star International Co., Ltd. [MSI] Radeon HD 5450
 Kernel driver in use: radeon
 Kernel modules: radeon

glxinfo | grep -i "direct rendering"
 direct rendering: Yes

When I plug in my DVI monitor, the automatic display GUI appears on my main HDMI screen, and it is possible to select multiple monitor configuration. It is then apparent that my main screen stretches, and I can move windows further away to the right - to the area of the DVI screen. The DVI monitor remains black, even though it has a signal of some sort. When I restart the computer and log in the HDMI monitor is active, but the the lightdm login screen is (supposedly) in the DVI window - so I can't see it but I can log in.

Here's my current xrandr output:

Code: Select all
xrandr -q
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080     60.00*+  50.00    59.94 
   1920x1080i    60.00    50.00    59.94 
   1680x1050     59.88 
   1280x1024     75.02    60.02 
   1440x900      74.98    59.90 
   1280x720      60.00    50.00    59.94 
   1024x768      75.03    60.00 
   800x600       75.00    60.32 
   720x576       50.00 
   720x576i      50.00 
   720x480       60.00    59.94 
   720x480i      60.00    59.94 
   640x480       75.00    72.81    66.67    60.00    59.94 
   720x400       70.08

DVI-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080     60.00*+
   1680x1050     59.88 
   1600x900      60.00 
   1280x1024     75.02    60.02 
   1280x960      60.00 
   1152x864      75.00 
   1280x720      60.00 
   1152x720      59.97 
   1024x768      75.03    60.00 
   832x624       74.55 
   800x600       75.00    60.32 
   640x480       75.00    59.94 
   720x400       70.08 

As you can see I have only one screen being sent from Xrandr, Screen 0. It has a resolution of 3840 x 1080 - meaning of course that it is stretched to fill the other monitor. However, no information is sent to the DVI monitor at all, so obviously it's black.

How can I set up a second screen so that I can send screen information to the other monitor? This was set up automatically somehow.

Code: Select all
xrandr --listmonitors
Monitors: 2
0: +*HDMI-0 1920/477x1080/268+0+0     HDMI-0
1: +DVI-0   1920/477x1080/268+1920+0  DVI-0

xrandr --listactivemonitors
Monitors: 2
 0: +*HDMI-0 1920/477x1080/268+0+0  HDMI-0
 1: +DVI-0 1920/477x1080/268+1920+0  DVI-0

Providers: number : 1
Provider 0: id: 0x55 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 4 outputs: 2 associated providers: 0 name:ATI Radeon HD 5450 @ pci:0000:04:00.0


I've looked around but I haven't been able to find out how to nicely ask Xrandr to simply send the screen information to the other monitor. How would I go about doing this?

Thanks in advance!
username1029
 
Posts: 8
Joined: 2018-10-17 08:47

Re: Setting up two monitors on Radeon graphics card

Postby Segfault » 2018-10-17 10:16

Normally xrandr --auto will refresh your setup. Anyhow, you may have broken EDID in your second monitor, in this case the monitor may get signal it cannot handle. Clues are in Xorg log. Have you verified your DVI port actually works and the cable is good?
Segfault
 
Posts: 811
Joined: 2005-09-24 12:24

Re: Setting up two monitors on Radeon graphics card

Postby bw123 » 2018-10-17 11:19

HDMI-0 connected primary 1920x1080+0+0
DVI-0 connected 1920x1080+1920+0


Have you tried moving it to the bottom, or a lower resolution? I have a monitor with broken EDID/DDC and it can cause some strange behavior. The largest left to right setup I have been able to make work on one screen is 2048.
User avatar
bw123
 
Posts: 3578
Joined: 2011-05-09 06:02
Location: TN_USA

Re: Setting up two monitors on Radeon graphics card

Postby username1029 » 2018-10-17 12:16

Hey guys! Didn't expect two quick replies. Much appreciated.

The current situation is that I once again tried unplugging everything and putting it back again, including the video card.
Both monitors are now active, but the DVI monitor has an extremely blue tint. Since the monitor works fine with VGA, I'm guessing the DVI cable is broken. Here's what an RGB color circle looks like on the two monitors:

https://i.imgur.com/CHXLsyM.jpg

Segfault wrote:Clues are in Xorg log.


Here's what I believe to be the relevant parts for the current session, for HDMI:

Code: Select all
[    99.474] (II) RADEON(0): KMS Color Tiling: enabled
[    99.474] (II) RADEON(0): KMS Color Tiling 2D: enabled
[    99.474] (II) RADEON(0): KMS Pageflipping: enabled
[    99.474] (II) RADEON(0): SwapBuffers wait for vsync: enabled
[    99.531] (II) RADEON(0): Output HDMI-0 has no monitor section
[    99.562] (II) RADEON(0): Output DVI-0 has no monitor section
[    99.619] (II) RADEON(0): EDID for output HDMI-0
[    99.619] (II) RADEON(0): Manufacturer: PHL  Model: c0cf  Serial#: 2136
[    99.619] (II) RADEON(0): Year: 2015  Week: 42
[    99.619] (II) RADEON(0): EDID Version: 1.3
[    99.619] (II) RADEON(0): Digital Display Input
[    99.619] (II) RADEON(0): Max Image Size [cm]: horiz.: 48  vert.: 27
[    99.619] (II) RADEON(0): Gamma: 2.20
[    99.619] (II) RADEON(0): DPMS capabilities: Off
[    99.619] (II) RADEON(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4
[    99.619] (II) RADEON(0): First detailed timing is preferred mode
[    99.619] (II) RADEON(0): redX: 0.633 redY: 0.351   greenX: 0.322 greenY: 0.630
[    99.619] (II) RADEON(0): blueX: 0.152 blueY: 0.050   whiteX: 0.313 whiteY: 0.329
[    99.619] (II) RADEON(0): Supported established timings:
[    99.619] (II) RADEON(0): 720x400@70Hz
[    99.619] (II) RADEON(0): 640x480@60Hz
[    99.619] (II) RADEON(0): 640x480@67Hz
[    99.619] (II) RADEON(0): 640x480@72Hz
[    99.619] (II) RADEON(0): 640x480@75Hz
[    99.620] (II) RADEON(0): 800x600@60Hz
[    99.620] (II) RADEON(0): 800x600@75Hz
[    99.620] (II) RADEON(0): 1024x768@60Hz
[    99.620] (II) RADEON(0): 1024x768@75Hz
[    99.620] (II) RADEON(0): 1280x1024@75Hz
[    99.620] (II) RADEON(0): Manufacturer's mask: 0
[    99.620] (II) RADEON(0): Supported standard timings:
[    99.620] (II) RADEON(0): #0: hsize: 1920  vsize 1080  refresh: 60  vid: 49361
[    99.620] (II) RADEON(0): #1: hsize: 1440  vsize 900  refresh: 60  vid: 149
[    99.620] (II) RADEON(0): #2: hsize: 1440  vsize 900  refresh: 75  vid: 3989
[    99.620] (II) RADEON(0): #3: hsize: 1680  vsize 1050  refresh: 60  vid: 179
[    99.620] (II) RADEON(0): #4: hsize: 1280  vsize 720  refresh: 60  vid: 49281
[    99.620] (II) RADEON(0): #5: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[    99.620] (II) RADEON(0): Supported detailed timing:
[    99.620] (II) RADEON(0): clock: 148.5 MHz   Image Size:  477 x 268 mm
[    99.620] (II) RADEON(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[    99.620] (II) RADEON(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[    99.620] (II) RADEON(0): Serial No: ZVC1542002136
[    99.620] (II) RADEON(0): Monitor name: PHL 223V5
[    99.620] (II) RADEON(0): Ranges: V min: 56 V max: 76 Hz, H min: 30 H max: 83 kHz, PixClock max 175 MHz
[    99.620] (II) RADEON(0): Supported detailed timing:
[    99.620] (II) RADEON(0): clock: 148.5 MHz   Image Size:  477 x 268 mm
[    99.620] (II) RADEON(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[    99.620] (II) RADEON(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[    99.620] (II) RADEON(0): Supported detailed timing:
[    99.620] (II) RADEON(0): clock: 27.0 MHz   Image Size:  477 x 268 mm
[    99.620] (II) RADEON(0): h_active: 720  h_sync: 736  h_sync_end 798 h_blank_end 858 h_border: 0
[    99.620] (II) RADEON(0): v_active: 480  v_sync: 489  v_sync_end 495 v_blanking: 525 v_border: 0
[    99.620] (II) RADEON(0): Supported detailed timing:
[    99.620] (II) RADEON(0): clock: 74.2 MHz   Image Size:  477 x 268 mm
[    99.620] (II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 h_blank_end 1650 h_border: 0
[    99.620] (II) RADEON(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking: 750 v_border: 0
[    99.620] (II) RADEON(0): Supported detailed timing:
[    99.620] (II) RADEON(0): clock: 27.0 MHz   Image Size:  477 x 268 mm
[    99.620] (II) RADEON(0): h_active: 720  h_sync: 732  h_sync_end 796 h_blank_end 864 h_border: 0
[    99.620] (II) RADEON(0): v_active: 576  v_sync: 581  v_sync_end 586 v_blanking: 625 v_border: 0
[    99.620] (II) RADEON(0): Number of EDID sections to follow: 1
[    99.620] (II) RADEON(0): EDID (in hex):
[    99.620] (II) RADEON(0):    00ffffffffffff00410ccfc058080000
[    99.620] (II) RADEON(0):    2a19010380301b782a3935a25952a127
[    99.620] (II) RADEON(0):    0c5054bd4b00d1c09500950fb30081c0
[    99.620] (II) RADEON(0):    818001010101023a801871382d40582c
[    99.620] (II) RADEON(0):    4500dd0c1100001e000000ff005a5643
[    99.620] (II) RADEON(0):    31353432303032313336000000fc0050
[    99.620] (II) RADEON(0):    484c2032323356350a202020000000fd
[    99.620] (II) RADEON(0):    00384c1e5311000a2020202020200109
[    99.620] (II) RADEON(0):    020322f14f0102030506071011121314
[    99.620] (II) RADEON(0):    15161f04230917078301000065030c00
[    99.620] (II) RADEON(0):    1000023a801871382d40582c4500dd0c
[    99.620] (II) RADEON(0):    1100001e8c0ad08a20e02d10103e9600
[    99.620] (II) RADEON(0):    dd0c11000018011d007251d01e206e28
[    99.620] (II) RADEON(0):    5500dd0c1100001e8c0ad09020403120
[    99.620] (II) RADEON(0):    0c405500dd0c11000018000000000000
[    99.620] (II) RADEON(0):    0000000000000000000000000000004d
[    99.620] (II) RADEON(0): Printing probed modes for output HDMI-0
[    99.620] (II) RADEON(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[    99.620] (II) RADEON(0): Modeline "1920x1080"x50.0  148.50  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (56.2 kHz e)
[    99.620] (II) RADEON(0): Modeline "1920x1080"x59.9  148.35  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.4 kHz e)
[    99.620] (II) RADEON(0): Modeline "1920x1080i"x60.0   74.25  1920 2008 2052 2200  1080 1084 1094 1125 interlace +hsync +vsync (33.8 kHz e)
[    99.620] (II) RADEON(0): Modeline "1920x1080i"x50.0   74.25  1920 2448 2492 2640  1080 1084 1094 1125 interlace +hsync +vsync (28.1 kHz e)
[    99.620] (II) RADEON(0): Modeline "1920x1080i"x59.9   74.18  1920 2008 2052 2200  1080 1084 1094 1125 interlace +hsync +vsync (33.7 kHz e)
[    99.620] (II) RADEON(0): Modeline "1680x1050"x59.9  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)
[    99.620] (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[    99.620] (II) RADEON(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[    99.620] (II) RADEON(0): Modeline "1440x900"x75.0  136.75  1440 1536 1688 1936  900 903 909 942 -hsync +vsync (70.6 kHz e)
[    99.620] (II) RADEON(0): Modeline "1440x900"x59.9   88.75  1440 1488 1520 1600  900 903 909 926 +hsync -vsync (55.5 kHz e)
[    99.620] (II) RADEON(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[    99.620] (II) RADEON(0): Modeline "1280x720"x50.0   74.25  1280 1720 1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[    99.620] (II) RADEON(0): Modeline "1280x720"x59.9   74.18  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[    99.620] (II) RADEON(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[    99.620] (II) RADEON(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[    99.620] (II) RADEON(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[    99.620] (II) RADEON(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x576"x50.0   27.00  720 732 796 864  576 581 586 625 -hsync -vsync (31.2 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x576i"x50.0   13.50  720 732 795 864  576 580 586 625 interlace -hsync -vsync (15.6 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x480"x60.0   27.03  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x480"x59.9   27.00  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x480i"x60.0   13.51  720 739 801 858  480 488 494 525 interlace -hsync -vsync (15.8 kHz e)
[    99.620] (II) RADEON(0): Modeline "720x480i"x59.9   13.50  720 739 801 858  480 488 494 525 interlace -hsync -vsync (15.7 kHz e)
[    99.620] (II) RADEON(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[    99.620] (II) RADEON(0): Modeline "640x480"x72.8   31.50  640 664 704 832  480 489 492 520 -hsync -vsync (37.9 kHz e)
[    99.620] (II) RADEON(0): Modeline "640x480"x66.7   30.24  640 704 768 864  480 483 486 525 -hsync -vsync (35.0 kHz e)
[    99.621] (II) RADEON(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[    99.621] (II) RADEON(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[    99.621] (II) RADEON(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)

And for the DVI:
Code: Select all
[    99.651] (II) RADEON(0): EDID for output DVI-0
[    99.651] (II) RADEON(0): Manufacturer: BNQ  Model: 7842  Serial#: 21573
[    99.651] (II) RADEON(0): Year: 2011  Week: 3
[    99.651] (II) RADEON(0): EDID Version: 1.3
[    99.651] (II) RADEON(0): Digital Display Input
[    99.651] (II) RADEON(0): Max Image Size [cm]: horiz.: 53  vert.: 29
[    99.651] (II) RADEON(0): Gamma: 2.20
[    99.651] (II) RADEON(0): DPMS capabilities: Off
[    99.651] (II) RADEON(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4
[    99.651] (II) RADEON(0): Default color space is primary color space
[    99.651] (II) RADEON(0): First detailed timing is preferred mode
[    99.651] (II) RADEON(0): redX: 0.649 redY: 0.338   greenX: 0.289 greenY: 0.609
[    99.651] (II) RADEON(0): blueX: 0.146 blueY: 0.070   whiteX: 0.313 whiteY: 0.329
[    99.651] (II) RADEON(0): Supported established timings:
[    99.651] (II) RADEON(0): 720x400@70Hz
[    99.651] (II) RADEON(0): 640x480@60Hz
[    99.651] (II) RADEON(0): 640x480@75Hz
[    99.651] (II) RADEON(0): 800x600@60Hz
[    99.651] (II) RADEON(0): 800x600@75Hz
[    99.651] (II) RADEON(0): 832x624@75Hz
[    99.651] (II) RADEON(0): 1024x768@60Hz
[    99.651] (II) RADEON(0): 1024x768@75Hz
[    99.651] (II) RADEON(0): 1280x1024@75Hz
[    99.651] (II) RADEON(0): 1152x864@75Hz
[    99.651] (II) RADEON(0): Manufacturer's mask: 0
[    99.651] (II) RADEON(0): Supported standard timings:
[    99.651] (II) RADEON(0): #0: hsize: 1152  vsize 720  refresh: 60  vid: 113
[    99.651] (II) RADEON(0): #1: hsize: 1280  vsize 720  refresh: 60  vid: 49281
[    99.651] (II) RADEON(0): #2: hsize: 1280  vsize 960  refresh: 60  vid: 16513
[    99.651] (II) RADEON(0): #3: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[    99.651] (II) RADEON(0): #4: hsize: 1600  vsize 900  refresh: 60  vid: 49321
[    99.651] (II) RADEON(0): #5: hsize: 1680  vsize 1050  refresh: 60  vid: 179
[    99.651] (II) RADEON(0): #6: hsize: 1920  vsize 1080  refresh: 60  vid: 49361
[    99.651] (II) RADEON(0): Supported detailed timing:
[    99.652] (II) RADEON(0): clock: 148.5 MHz   Image Size:  477 x 268 mm
[    99.652] (II) RADEON(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[    99.652] (II) RADEON(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[    99.652] (II) RADEON(0): Serial No: J1B01249SL000
[    99.652] (II) RADEON(0): Ranges: V min: 50 V max: 76 Hz, H min: 24 H max: 83 kHz, PixClock max 175 MHz
[    99.652] (II) RADEON(0): Monitor name: BenQ G2420HDB
[    99.652] (II) RADEON(0): EDID (in hex):
[    99.652] (II) RADEON(0):    00ffffffffffff0009d1427845540000
[    99.652] (II) RADEON(0):    0315010380351d782e6085a6564a9c25
[    99.652] (II) RADEON(0):    125054a56b80710081c081408180a9c0
[    99.652] (II) RADEON(0):    b300d1c00101023a801871382d40582c
[    99.652] (II) RADEON(0):    4500dd0c1100001e000000ff004a3142
[    99.652] (II) RADEON(0):    3031323439534c303030000000fd0032
[    99.652] (II) RADEON(0):    4c185311000a202020202020000000fc
[    99.652] (II) RADEON(0):    0042656e51204732343230484442001a
[    99.652] (II) RADEON(0): Printing probed modes for output DVI-0
[    99.652] (II) RADEON(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[    99.652] (II) RADEON(0): Modeline "1680x1050"x59.9  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)
[    99.652] (II) RADEON(0): Modeline "1600x900"x60.0  108.00  1600 1624 1704 1800  900 901 904 1000 +hsync +vsync (60.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1280x960"x60.0  108.00  1280 1376 1488 1800  960 961 964 1000 +hsync +vsync (60.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[    99.652] (II) RADEON(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1152x720"x60.0   67.28  1152 1208 1328 1504  720 721 724 746 -hsync +vsync (44.7 kHz)
[    99.652] (II) RADEON(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[    99.652] (II) RADEON(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[    99.652] (II) RADEON(0): Modeline "832x624"x74.6   57.28  832 864 928 1152  624 625 628 667 -hsync -vsync (49.7 kHz e)
[    99.652] (II) RADEON(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[    99.652] (II) RADEON(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[    99.652] (II) RADEON(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[    99.652] (II) RADEON(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[    99.652] (II) RADEON(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[    99.652] (II) RADEON(0): Output HDMI-0 connected
[    99.652] (II) RADEON(0): Output DVI-0 connected
[    99.652] (II) RADEON(0): Using spanning desktop for initial modes
[    99.652] (II) RADEON(0): Output HDMI-0 using initial mode 1920x1080 +0+0
[    99.652] (II) RADEON(0): Output DVI-0 using initial mode 1920x1080 +1920+0
[    99.652] (II) RADEON(0): mem size init: gart size :3fdde000 vram size: s:40000000 visible:f4ca000
[    99.652] (II) RADEON(0): EXA: Driver will allow EXA pixmaps in VRAM
[    99.652] (==) RADEON(0): DPI set to (96, 96)
[    99.652] (==) RADEON(0): Using gamma correction (1.0, 1.0, 1.0)
[    99.652] (II) Loading sub module "ramdac"
[    99.652] (II) LoadModule: "ramdac"
[    99.652] (II) Module "ramdac" already built-in
[    99.652] (II) UnloadModule: "modesetting"
[    99.652] (II) Unloading modesetting
[    99.652] (II) UnloadModule: "fbdev"
[    99.652] (II) Unloading fbdev
[    99.652] (II) UnloadSubModule: "fbdevhw"
[    99.652] (II) Unloading fbdevhw
[    99.652] (II) UnloadModule: "vesa"
[    99.652] (II) Unloading vesa
[    99.652] (--) Depth 24 pixmap format is 32 bpp
[    99.654] (II) RADEON(0): [DRI2] Setup complete
[    99.654] (II) RADEON(0): [DRI2]   DRI driver: r600
[    99.654] (II) RADEON(0): [DRI2]   VDPAU driver: r600
[    99.654] (II) RADEON(0): Front buffer size: 16320K
[    99.655] (II) RADEON(0): VRAM usage limit set to 210852K
[    99.657] (==) RADEON(0): DRI3 disabled
[    99.657] (==) RADEON(0): Backing store enabled
[    99.657] (II) RADEON(0): Direct rendering enabled
[    99.658] (II) EXA(0): Driver allocated offscreen pixmaps
[    99.658] (II) EXA(0): Driver registered support for the following operations:
[    99.658] (II)         Solid
[    99.658] (II)         Copy
[    99.658] (II)         Composite (RENDER acceleration)
[    99.658] (II)         UploadToScreen
[    99.658] (II)         DownloadFromScreen
[    99.658] (II) RADEON(0): Acceleration enabled
[    99.658] (==) RADEON(0): DPMS enabled
[    99.658] (==) RADEON(0): Silken mouse enabled
[    99.661] (II) RADEON(0): Set up textured video
[    99.663] (II) RADEON(0): [XvMC] Associated with Radeon Textured Video.
[    99.663] (II) RADEON(0): [XvMC] Extension initialized.

bw123 wrote:Have you tried moving it to the bottom, or a lower resolution?

Yep! I did that before I dismantled and anti-dismantled everything, but didn't see any difference (probably because I couldn't *see* the difference).

I guess I need to try another cable, or connect the DVI monitor directly to the motherboard (the DVI monitor also has VGA. so does the mobo). It seems I can't use both the graphics card and the monitor outputs motherboard at the same time, however.
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Re: Setting up two monitors on Radeon graphics card

Postby bw123 » 2018-10-17 15:02

Pretty weird, no black but you got it working. I have seen the connectors get loose on radeon cards, cables like VGA or DVI can be kind of heavy, or using an adapter they stick out and it can cause a cracked solder joint if it gets knocked around. Jiggle it, prop it up or screw it down?

That will be a nice setup. I used to use the integrated VGA with an addin board, with the setting enabled in bios called 'surroundview' on this older msi board I am using. That way wasn't workable for me on stretch, but heck you have a newer card and motherboard, tweak it...

Might have to give XFCE a try, looks like it handles two monitors ok.

p.s. here's one of my favorites 4.4m
http://www.colour-science.com/quality%2 ... 3pixel.jpg
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Re: Setting up two monitors on Radeon graphics card

Postby username1029 » 2018-10-21 19:13

Yeah, it's pretty strange. I'm still having the blue tint (haven't purchased a new cable), but the screen generally works - even though the way the screens start up could probably be used as a reliable TRNG. Each screen is visible in BIOS, LUKS, and the Lightdm login every other time or so. Then the DVI screen is black after login, and then a few minutes after I've run xrandr --auto it starts up and works fine.

bw123 wrote:Might have to give XFCE a try, looks like it handles two monitors ok.

Yeah, it does for a pretty comfortable setup. Quite similar to LXDE since it's very reliable, and not bloated at all, but definitely easier on the eye.
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Re: Setting up two monitors on Radeon graphics card

Postby CwF » 2018-10-22 15:35

I will vouch for XFCE, it handles 3 or 4 port cards for me fine.

Check the cards dvi connector on the card side, where you can see all the pins elbows. Make sure they're even. I've seen them push back from the connector, easy to see.
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Re: Setting up two monitors on Radeon graphics card

Postby username1029 » 2018-11-04 19:23

CwF wrote:Check the cards dvi connector


I did and it seemed fine. I went and acquired a new cable though, and now it works perfectly. Tremendous workstation.

Thanks for the help, guys.
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Re: Setting up two monitors on Radeon graphics card

Postby macky » 2018-11-18 06:09

Mine works when I update the graphics cards I thought it was a bug or something.
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