XrandR always fails

[mabarian]

Hi people,

I was trying to add a new resolution mode to my monitor, but XrandR always fails. These are the steps I follow:

$ gtf 1280 768 60

then I copy the result and type

xrandr --newmode "1280x768_60.00" 80.14 1280 1344 1480 1680 768 769 772 795 -HSync +Vsync

but always says:

xrandr: Failed to get size of gamma for output default
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 153 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 19
Current serial number in output stream: 19

Finally I just can't create another resolution. And yes, my monitor should run in 1280x768.

Anyone cuold help me please? Thank you very much!

[Riccardix]

I've the same problem here...
someone can help us solve ?

this is my hdw:

lspci -nn | grep
VGA01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV280 [Radeon 9200 PRO] [1002:5960] (rev 01)

xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
xrandr: Failed to get size of gamma for output default
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 151 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 19
Current serial number in output stream: 19

xrandr --addmode default 1280x1024_60.00
xrandr: Failed to get size of gamma for output default

I get blank screens if:
1) erasing the xorg.conf
2) putting in the device section of the xorg anything other than "vesa"

putting "vesa" I get a slow, not hdw accelerated screen, not good for nothing else than putting this text here ... ;(

In windows (other partition) everything is running well.

I remain at your disposal for any test.

Thanks
RiccardiX

[Riccardix]

Something that (i hope) can help solving this problem:

This error has begun when I decided to install the ATI fglrx drivers.

Now, if I want to uninstall them, I get an error message that broke the uninstall process leaving the fglrx driver on my computer.

Thanks again for help.

[vs8]

I have the same problem. I followed the Wiki's instructions but they seem to fail every time.

[Riccardix]

Reinstalled ubuntu 10.04, upgraded to 10.10 without install anything else for managing the 3d, now everything work fine

[jameslyons]

Reinstalled ubuntu 10.04, upgraded to 10.10 without install anything else for managing the 3d, now everything work fine

I installed a fresh 10.10 and I have spent all day trying to resolve the resolution issue but get the following still:

root@jim-T8200:/home/jim# xrandr --output VGA1 --mode 1024×768_60.00
xrandr: Failed to get size of gamma for output default
warning: output VGA1 not found; ignoring

Please can anybody tell me what to do?
Thanks in advance, James.

[realzippy]

I installed a fresh 10.10 and I have spent all day trying to resolve the resolution issue but get the following still:

root@jim-T8200:/home/jim# xrandr --output VGA1 --mode 1024×768_60.00
xrandr: Failed to get size of gamma for output default
warning: output VGA1 not found; ignoring

Please can anybody tell me what to do?
Thanks in advance, James.

Welcome to UF!

Please post the output of

xrandr

please run it as normal user,not as "root";no need for root.

[jameslyons]

Welcome to UF!

Please post the output of

xrandr

please run it as normal user,not as "root";no need for root.

Here it is..... James.

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 800 x 600, maximum 800 x 600
default connected 800x600+0+0 0mm x 0mm
800x600 60.0* 56.0
640x480 60.0
400x300 60.0 56.0
320x240 60.0
“1024×768″ (0x10f) 70.0MHz
h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 52.7KHz
v: height 768 start 771 end 775 total 798 clock 66.1Hz

[realzippy]

As you can see from the output,
there is whether a VGA1 display nor a 1024x768 resolution,so your command cannot work.
Is it an old trident cyberblade graphics device?
To see this paste into terminal:

lspci |grep VGA

[realzippy]

Sorry,just see this:
“1024×768″ (0x10f) 70.0MHz

Have you run a xrandr --addmode "1024x768 bla... command formerly?


EDIT:
If so,try:

xrandr --output default --mode 1024×768