been having this myself...i have fiddled and poked and made it go away only for it to come back initilally i turned acceleratrion off and then manually re edited the XF86Config-4 to enable it again. This worked until i used the kde control panel to edit an unrelated thing ( cant see how this is possible but it is the only common thing i can find) as it is now.....sometimes it works sometimes it doesnt, and the only thing i can see as being guilty is kde control panel??????????. i havent been very scientific ( who wants to lock their system up on purpose for the sake of experiment) but it seems that now i can change res or run games until i change something in the control center then BOOM it goes wrong again. At no time does my XF86Config-4 change. I have been posting on the mandrake newgroup about this for 3 weeks now ( since beta 3) and no answers have come. It seems that there are an awful lot of nvidia nazia out there who sneer when our voodoos go wrong. I thought one was meant to use betas and report bugs so they can be corrected, in this case the attitude is very much " shut yer bitchin gob". Perhaps X4.03 is guilty perhaps kde, perhaps the mandrake setup process ( after all no one would describe drakconfs display page as a shining example of the best mandrake has to offer). i realise this doesnt help but we are not alone...sooner or later someone who really does know linux will spend 30 secs on this and solve it:) When i first posted about it on the NG, response varied from " you are a pratt mandrake is flawless and could never have made an error" to "its a beta, chill out, shut up and all will be well" good luck i will share in detail anything remotely useful as i come accross it. On Monday 23 April 2001 23:47, Will wrote: > Ok, I installed mandrake 8.0 with xfree 4.0.3. It's using the tdfx driver > for my AGP voodoo3 card. Whenever I try to switch resolution via ctrl alt > plus/minus or an app tries to switch resolutions, the x-server crashes. > Any ideas on how to fix this?