ATI Radeon 7500 Wrong Resolution Dual Monitor with HDMI

[tbone3421]

I'm having trouble with a second monitor in a fresh installation of 12.04LTS. I'm on a desktop with an ATI Radeon 7500 and I have two identical LG monitors that each support 1920x1080. The second monitor is connected with HDMI and seems to work fine at resolutions less than 1920x1080. The DVI monitor is working correctly at 1920x1080. I've been trying to follow various posts on these forums, installing fglrx and the updated version as well. I've also set the resolution for both monitors in the Catalyst Control Center as well as in the Ubuntu Displays setting, and everything is set to 1920x1080. Am I missing a modeline or something? Can anyone tell me why the monitor works for everything except this resolution? I'm pretty stuck at this point. Thanks so much in advance for any advice at all.

Perhaps I have installed the drivers incorrectly, or in the wrong order?

Additionally, fglrxinfo yields the following:
display: :0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7500 Series
OpenGL version string: 4.2.11627 Compatibility Profile Context

A copy of my /etc/X11/xorg.conf file is pasted here:

Section "ServerLayout"
Identifier "amdcccle Layout"
Screen 0 "amdcccle-Screen[1]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Monitor"
Identifier "0-DFP6"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Device"
Identifier "ATI radeon 6870"
Driver "fglrx"
BusID "PCI:1:0:0"
EndSection

Section "Device"
Identifier "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-DFP5" "0-DFP5"
Option "Monitor-DFP6" "0-DFP6"
BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Virtual 3840 1920
1,1 Top


The xrandr command yields:

xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 3840 x 1920
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 disconnected (normal left inverted right x axis y axis)
DFP3 disconnected (normal left inverted right x axis y axis)
DFP4 disconnected (normal left inverted right x axis y axis)
DFP5 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 60.0*+ 50.0 59.9 30.0 25.0 30.0
1776x1000 50.0 59.9 25.0 30.0
1680x1050 50.0 60.0
1400x1050 50.0 60.0
1600x900 50.0 60.0
1360x1024 50.0 60.0
1280x1024 50.0 75.0 60.0
1440x900 50.0 60.0
1280x960 50.0 75.0 60.0
1152x864 50.0 59.9 75.0
1280x768 50.0 75.0 60.0
1280x720 60.0 50.0 59.9
1024x768 50.0 75.0 60.0
1152x648 50.0 59.9
800x600 50.0 75.0 60.3 56.2
720x480 50.0 60.0 59.9
640x480 50.0 75.0 60.0 59.9
DFP6 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 59.9*+
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1360x1024 60.0
1280x1024 75.0 60.0
1440x900 60.0
1280x960 75.0 60.0
1152x864 59.9 75.0
1280x768 75.0 60.0
1280x720 75.0 60.0
1024x768 75.0 60.0
800x600 75.0 60.3 56.2
640x480 75.0 59.9
CRT1 disconnected (normal left inverted right x axis y axis)


Any advice at all is greatly appreciated, pretty stumped on this one.

[QIII]

Did you copy your entire xorg.conf correctly?

Section "Screen"
        Identifier "amdcccle-Screen[1]-0"
        Device     "amdcccle-Device[1]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Virtual   3840 1920
                1,1           Top

is odd. The Section and SubSection are not matched with EndSubSection and EndSection

Section "Screen"
        Identifier "amdcccle-Screen[1]-0"
        Device     "amdcccle-Device[1]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Virtual   3840 1920
                1,1           Top
        EndSubSection
EndSection

Take a look at that again.

Not that that's all that may be wrong here, but I'm checking out the rest.

Here's mine, by way of example

Section "Monitor"
    Identifier   "0-DFP3"
    Option        "VendorName" "ATI Proprietary Driver"
    Option        "ModelName" "Generic Autodetecting Monitor"
    Option        "DPMS" "true"
    Option        "PreferredMode" "1920x1080"
    Option        "TargetRefresh" "60"
    Option        "Position" "0 0"
    Option        "Rotate" "normal"
    Option        "Disable" "false"
EndSection

Section "Monitor"
    Identifier   "0-DFP4"
    Option        "VendorName" "ATI Proprietary Driver"
    Option        "ModelName" "Generic Autodetecting Monitor"
    Option        "DPMS" "true"
    Option        "PreferredMode" "1920x1080"
    Option        "TargetRefresh" "61"
    Option        "Position" "1920 0"
    Option        "Rotate" "normal"
    Option        "Disable" "false"
EndSection

Section "Screen"
    Identifier "Default Screen"
    DefaultDepth    24
EndSection

Section "Screen"
    Identifier "amdcccle-Screen[1]-0"
    Device     "amdcccle-Device[1]-0"
    DefaultDepth     24
    SubSection "Display"
        Viewport   0 0
        Virtual   3840 1920
        Depth     24
    EndSubSection
EndSection

Section "Module"
    Load  "glx"
EndSection

Section "ServerLayout"
    Identifier     "amdcccle Layout"
    Screen      0  "amdcccle-Screen[1]-0" 0 0
EndSection

Section "Device"
    Identifier  "amdcccle-Device[1]-0"
    Driver      "fglrx"
    Option        "Monitor-DFP3" "0-DFP3"
    Option        "Monitor-DFP4" "0-DFP4"
    BusID       "PCI:1:0:0"
EndSection

[tbone3421]

Did you copy your entire xorg.conf correctly?

Section "Screen"
        Identifier "amdcccle-Screen[1]-0"
        Device     "amdcccle-Device[1]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Virtual   3840 1920
                1,1           Top

is odd. The Section and SubSection are not matched with EndSubSection and EndSection

Section "Screen"
        Identifier "amdcccle-Screen[1]-0"
        Device     "amdcccle-Device[1]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Virtual   3840 1920
                1,1           Top
        EndSubSection
EndSection

Take a look at that again.

Not that that's all that may be wrong here, but I'm checking out the rest.

I must have messed up the copy/paste somehow. So embarrassing! Here is the current version:

Section "ServerLayout"
Identifier "amdcccle Layout"
Screen 0 "amdcccle-Screen[1]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Monitor"
Identifier "0-DFP6"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Device"
Identifier "ATI radeon 6870"
Driver "fglrx"
BusID "PCI:1:0:0"
EndSection

Section "Device"
Identifier "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-DFP5" "0-DFP5"
Option "Monitor-DFP6" "0-DFP6"
BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Virtual 3840 1920
Depth 24
EndSubSection
EndSection

[QIII]

Do you have Xinerama on?

[tbone3421]

Do you have Xinerama on?

In Catalyst Control Center the Xinerama box is grayed out because I "currently have only one desktop enabled". Not sure what this means. I do not desire cloned monitors, but rather a big single desktop that spans both monitors, which is what I have now except the second monitor's resolution is wacky. Even though its set to 1920x1080, it appears significantly smaller than that, not filling up the entire monitor.

[QIII]

Ack. Yeah. Xinerama wouldn't be available, then.

Which driver do you have and how did you install it?

[tbone3421]

Ack. Yeah. Xinerama wouldn't be available, then.

Which driver do you have and how did you install it?

I've been trying different drivers. How can I determine which one is currently in use?

[tbone3421]

Ack. Yeah. Xinerama wouldn't be available, then.

Which driver do you have and how did you install it?

jockey-text -l
xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)


I believe I installed this from Synaptic, which is 'supposed' to remove conflicting items.

[QIII]

Let's get back to that in a minute. I'm going to have you cat something, but it'll return a lot of info and I'll have to tell you where to look. I want to check something before we go into all that.

First...

Open CCC.

Under "Display Manager", click each of your monitors. On the "Adjustments" tab, make sure each of them has "Use display for scaling" checked and Graphics processor scaling is set to "Scale image to full panel size"

Edited: Removed some text in case someone follows this. Solution below.

[tbone3421]

Let's get back to that in a minute. I'm going to have you cat something, but it'll return a lot of info and I'll have to tell you where to look. I want to check something before we go into all that.

First...

Open CCC.

Under "Display Manager", click each of your monitors. On the "Adjustments" tab, make sure each of them has "Use display for scaling" checked and Graphics processor scaling is set to "Scale image to full panel size"

EDIT: OK, hold the boat! A couple of things. Let me have a moment to type. Be right back.

Confirmed that those items are indeed checked.