Help on screen rotating: RHEL4.3, ATI X1300

[cyclonew]

I am recently switching to Linux. Please bear with me if my question is native. I did google search on this topic but didn't get anything helpful.

My question is that how to rotate my LCD into the portrait mode and setup X appropriately. I have installed the latest ATI fglrx driver (version 8.32.05). However, I can't find any rotation option in their control panel. The 'xrandr' command shows only one possible option (normal) for 'Rotations possible'.

I did found online a lot of discussions about screen rotating on NV video cards. However, there are very few posts talking about ATI driver support for screen rotating in Linux. I really appreciate if someone can give me instructions on how to do it.

[nV2zXR1o]

I also try to rotate my screen to no avail. I have an AMD 690G motherboard with integrated Radeon X1250 graphics and I am using Debian sid with the latest ATi driver (8.39.4). I can only change my resoltion with xrandr -s, but no rotation or reflection. I tried the VESA driver too but it won't let me rotate the screen either. Could it be that there is simply no support for rotation in the driver from ATi?

[nV2zXR1o]

I now have rotation via the fbdev xorg server.
You need:
Kernel with vesa framebuffer and fbcon.
Kernel boot options video=vesa:ywrap,mtrr vga=794 fbcon=rotate:3.
xorg.conf with Driver "fbdev" and Option "Rotate" "CCW".
You can also rotate the console with "echo 3 > /sys/class/graphics/fb0/rotate_all".

The numbers for the vga option are listed in /usr/src/linux/Documentation/fb/vesafb.txt,
i need to convert hexadecimal to decimal.

The vesa framebuffer is very slow though, you cannot really work with that.

[erdalronahi]

Is there a possibility to make rotation work with the free "ati" driver? I am using it on an older ATI 7000 card on Ubuntu 7.04.

When I try to enable rotation with 'xrandr -o left' I get the following result:

X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 154 (RANDR)
Minor opcode of failed request: 2 (RRSetScreenConfig)
Serial number of failed request: 12
Current serial number in output stream: 12

Enabling "RandRRotation" in xorg.conf did not help.