ATI Catalyst 9.8 Xorg freeze when idle

[connexion2000]

Hi,
I have installed catalyst 9.8 in my arch system with radeon HD 4850. I suffer from Xorg freezes. I leave my computer for several minutes, then go back and screen is blank, and there is no signal. REISUB sequence does the work.
I used to use ati open source driver but now I need it to use HDMI and audio over HDMI.
Does anyone know the solution?

[cutterjohn]

Pray that they poach some nVidia driver developers soon...

Other than that if you're using Compiz/beryl (sometimes known as desktop effects) turn them ALL OFF, as this "fixed" my freeze when awaking from sleep and a couple of other things...

Beyond that we all just sit around waiting for either the OSS drivers to catch up to current architectures and actually be good(bridgman says they're already better than the proprietary for 2D) or wait for something awful to happen at AMD and they actually release a quality catalyst for linux + X.org...

[Death Knight]

I got same thing with using kernel 2.6.27.
I upgrade my kernel to 2.6.31-rc7 and all hangups are gone.
You need to modify fglrx kernel code with patch for make compatible with 2.6.31.