Radeon 4890 getting a blank screen and fans go up to 100% (kernel 3.13.3)
Submitted by Peter Asplund
Assigned to Default DRI bug account
I've been fiddling around with the cooling on my Radeon 4890 and replaced it with an Arctic Cooling I had mounted on my old 4850 card.
It worked for a while, but then the screens went black and the fan maxed out completely. BUT I noticed that the computer was still running, so it hadn't crashed. I could SSH in and reboot it manually.
I figured the card had gotten to hot, so I switched the coolers again. But the problem was still there! I started monitoring the temperatures, and they really weren't any hotter than normal. Around 45 degrees C. The weird behavior still repeated itself, even when just browsing the web for a couple of minutes. One time it happened after only 2-3 minutes!
I then booted into Windows to see if the problem was there, and nothing happened. I ran benchmarks (3D Mark) and played Left 4 Dead on highest settings for an hour, and no issues. I then booted into Linux, and it still happened.
So I then realized I had updated the kernel to 3.13.3 from 3.12.3, and I booted into the old kernel instead. And now I've been running some "emerges" for an hour, and browsed the web, without any issues.
Is it possible some weird bug has gotten into the 3.13 kernel? I googled the issue, and saw that there were several posts about the same behavior on the Catalyst drivers a year or so back. Even on Windows that is.