Slackware StartX does not work on Dell Precision M6600 and AMD Radeon HD 9600 series

MY Dell Precision M6600 is installed with AMD Radeon HD 9600 and Slackware Linux. The problem is the startx not working on my laptop and it is telling me:

Quote:

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(II) [KMS] drm report mode setting isn't supported.
(EE) RADEON(0): Chipset: "AMD Radeon HD 6900 Series" (ChipID = 0x6720) requires KMS
(EE) Screens(s) found, but none have a usable configuration.

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Any ideas?

First of all check whether the mode being set at boot time? To see this run the following command in a terminal Window:

Code:

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cat /proc/cmdline

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if you notice any vga=XXX stuff, you have to replace it with /etc/grub.conf and reboot:

Code:

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vga=normal nomodeset

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however if you don’t want to replace it with /etc/grub.conf, simply reboot the system and block the boot process for to modify the kernel parameter line by yourself. I hope it can help.

I think that it is built into the kernel. You have to Reboot and append the "vga=normal nomodeset" to the kernel using command line. If you think that it is Lilo and not Grub, then you can run "Linux vga=normal nomodeset" during boot. I hope that you know how to verify it.

I think that the X is crashing in your case and it might be due to the software rendering falling. To fix this, you have some options which you can try by using xfce4 instead of KDE4. You have to disable compositing by creating /etc/X11/xorg.conf using this:

Code:

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Section "Extensions"
    Option "Composite" "Disable"
EndSection

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Otherwise you should try to install a compatible driver, which fully supports compositing.

It seems like you are running X by the help of nouveau driver. The only problem is it will not support all KDE desktop effects. If you had the nividia card, then you could try installing the nvidia proprietary driver. But in this case you are using the AMD card and for this I couldn’t able to find the right driver yet.