I recently bought a chinese cheap video card with a Radeon HD 6570 chip.
I bought it because I read here and here that it’s supported, but when I launch a recent nightly I get blank screen (not completely shut off: panel lit with black screen).
Looking at syslog it seems it’s loading fine, except there’s no mention about its native resolution (1680x1050), I can see only references to 1280x1024. Is it a known problem or should I open a ticket?
Is there a way to set manually a specific resolution?
Thank you for any advice and suggestion
Edit 0: ticket opened
Edit 1: Blacklisting radeon_hd driver let’s my monitor go out of range with frequencies (74kh, 119Hz) even changing default resolution under fail-safe boot menu