Same issue on a Dell OptiPlex 755 under 2.6.3[56]*
I installed 2.6.37-rc2 from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.37-rc2-maverick/ Seems slightly better with kworker but still noticeable and annoying.
I set poll=N for drm_kms_helper and now I don't notice the problem anymore.
Same issue on a Dell OptiPlex 755 under 2.6.3[56]*
I installed 2.6.37-rc2 from: http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v2.6.37- rc2-maverick/
Seems slightly better with kworker but still noticeable and annoying.
I set poll=N for drm_kms_helper and now I don't notice the problem anymore.