Can't set my resolution to 1920x1080

[alzie]

I'll direct you to ST3ALTHPSYCH0's instructions here: http://ubuntuforums.org/showthread.php?t=1320785

Its the way I set my resolution.

I hope it helps

[cascade9]

Yo probably need to change

Modes "1920x1080_60.00" to

Modes "1920x1080_75.00"

And also

VertRefresh 56.0 - 60.0 to

VertRefresh 56.0 - 75.0

Option "TargetRefresh" "60" to

Option "TargetRefresh" "75"

Its got to be easier to change it from your ATI drivers than editing xorg.conf.

[moe_syzlak]

Hey Knolan, you could also try another distro. and see what config works under that one and then come back to Ubuntu if you wish. FOSS is all about choice.

-- Moe

[solitaire]

Think "full HD" screens run at 60Hz not 75Hz so they might be why they are not working (the screen can't handle the 75 refresh rate.

What ATI drivers are you using? ATI's stock drivers?. Diffrent drivers have diffrent limits.

You could try the X-Swat ATI drivers (stable)
https://edge.launchpad.net/~ubuntu-x-swat/+archive/x-updates

Theres also Bleeding-edge (unstable) drivers; but not for the faint hearted...

*edit*
Acording to Samsung the Monitor's max resolution is: 1920X1080p@60Hz
So change the "75" to "60" that might help...
http://www.samsung.com/us/consumer/o...etail&tab=spec

[jaspagam]

+1 Vote

I am a new user from XP (day 2) and have this issue. I also had sound issues but found the answers. All the help is really great for someone who has no idea what to do.

I really like Ubuntu and want it to work. I just got a Samsung 24in monitor and it will not display in its native 1920x1080 resolution. I had to plug in a Dell 19in via VGA to get started.

I tried all but the download of the old version, booting up and making a new config file.

Has anyone found any other solution?

Thanks all.

[sharaq]

Just try this ....

http://ubuntuforums.org/showthread.php?t=1364460

think this will help...

[cascade9]

Think "full HD" screens run at 60Hz not 75Hz so they might be why they are not working (the screen can't handle the 75 refresh rate.

What ATI drivers are you using? ATI's stock drivers?. Diffrent drivers have diffrent limits.

You could try the X-Swat ATI drivers (stable)
https://edge.launchpad.net/~ubuntu-x-swat/+archive/x-updates

Theres also Bleeding-edge (unstable) drivers; but not for the faint hearted...

*edit*
Acording to Samsung the Monitor's max resolution is: 1920X1080p@60Hz
So change the "75" to "60" that might help...
http://www.samsung.com/us/consumer/o...etail&tab=spec

That samsung page has no refresh rate data. I had already checked there, BTW. After doing a bit more pockign around, it seems you are probably right, it doesnt support 1920x1080 @ 75Hz. It does 75Hz at lower resolutions, but not there. I only thought that it must be 1920x1080 @ 75Hz because I found some stuff about it being a '75Hz monitor', and because the 'black bars at the edges' is a typical problem if your running a lower refresh rate than you could, but I think I was wrong.

Also, while the spec for HD is 1920x1080 @ 60Hz, its not going to be a problem to run at 75Hz refesh rate (if your monitor supports it).

[solitaire]

That samsung page has no refresh rate data. I had already checked there, BTW. After doing a bit more pockign around, it seems you are probably right, it doesnt support 1920x1080 @ 75Hz. It does 75Hz at lower resolutions, but not there. I only thought that it must be 1920x1080 @ 75Hz because I found some stuff about it being a '75Hz monitor', and because the 'black bars at the edges' is a typical problem if your running a lower refresh rate than you could, but I think I was wrong.

Also, while the spec for HD is 1920x1080 @ 60Hz, its not going to be a problem to run at 75Hz refesh rate (if your monitor supports it).

Sorry about that!!
It's the way the site runs...
I tried to post the link to their support and downloads tab on that page!
There you can download the user manual and it tells you there it's 60Hz only!!

[jaspagam]

Just try this ....

http://ubuntuforums.org/showthread.php?t=1364460

think this will help...

Thanks sharaq. Your write has really helped. I found others with the same type of info but yours is the simplest to follow. Everything works will until step 4. In my case i believe I need to change DVI-0 but I get the error below. I am able to make the change to VGA-0 on my smaller dell monitor though so I know I'm close. I am running two monitors right now because if I boot up with just the Samsung connected to DVI or VGA i just get a black screen.

Here is my terminal session. Am I just typoing something?

Thanks for all the help I am loving the way ubuntu looks and feels. I cant wait to make windows just a virtual box I only use when I have to. And looking forward to help out some day when I'm not such a newbie.

home@home-desktop:~$ xrandr
Screen 0: minimum 320 x 200, current 2720 x 1024, maximum 2720 x 1039
VGA-0 connected 1280x1024+1440+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0     60.0* 
   1152x864       75.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9  
   720x400        70.1  
DVI-0 connected 1440x900+0+0 (normal left inverted right x axis y axis) 531mm x 298mm
   1280x1024      60.0  
   1440x900       59.9* 
   1280x960       60.0  
   1280x800       59.9  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
S-video disconnected (normal left inverted right x axis y axis)
home@home-desktop:~$ cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
home@home-desktop:~$ xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
home@home-desktop:~$ xrandr --addmode DVI-0 1920x1080_60.00
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  150 (RANDR)
  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  25
  Current serial number in output stream:  26
home@home-desktop:~$ xrandr --addmode DVI0 1920x1080_60.00
xrandr: cannot find output "DVI0"
home@home-desktop:~$ xrandr --addmode VGA-0 1920x1080_60.00
home@home-desktop:~$ xrandr --output DVI-0 --mode 1920x1080_60.00
xrandr: cannot find mode 1920x1080_60.00
home@home-desktop:~$

[solitaire]

Try the commands again instead try using:
+hsync +vsync
From the User Mnual:

  Display Mode    Horizontal Vertical Fre- Pixel Clock Sync Polarity
                  Frequency quency (Hz)       (MHz)       (H/V)
                     (kHz)
 VESA, 640 X 480    31.469     59.940         25.175        -/-
 VESA, 800 X 600    35.156     56.250         36.000       +/+
 VESA, 800 X 600    37.879     60.317         40.000       +/+
VESA, 1024 X 768    48.363     60.004         65.000        -/-
VESA, 1280 X 800    49.702     59.810         83.500        -/+
VESA, 1280 X 960    60.000     60.000        108.000       +/+
VESA, 1280 X 1024   63.981     60.020        108.000       +/+
VESA, 1440 X 900    55.935     59.887        106.500        -/+
VESA, 1600 X 1200   75.000     60.000        162.000       +/+
VESA, 1680 X 1050   65.290     59.954        146.250        -/+
VESA, 1920 X 1080   67.500     60.000        148.500       +/+