I have encountered similar problem
My system spec is:
HP Pavilion dv6810us - AMD Turion 64 X2 mobile technology TL-60 / 2 GHz - NVIDIA GeForce 7150M Shared video memory (UMA)
And only Ubuntu 8.10 is affected. Hope there'll soon be an update that solve the problem
I have encountered similar problem
My system spec is:
HP Pavilion dv6810us
- AMD Turion 64 X2 mobile technology TL-60 / 2 GHz
- NVIDIA GeForce 7150M Shared video memory (UMA)
And only Ubuntu 8.10 is affected. Hope there'll soon be an update that solve the problem