| Bug ID | 94502 |
|---|---|
| Summary | R9-270 has no video output when underclocked |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/Radeon |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | maweki@gmail.com |
I have a Radeon R9-270 and I am running Fedora 23 with the default OpenSource drivers supplied with the repository. Yesterday I did an Update from Kernel 4.3.3-300 to 4.4.3-300 and I started seeing some issues. When I do nothing for about 12 seconds the screens (dual head) turn blank. Moving the mouse makes the screen go back on again. Sometimes the login-screen of the gnome-shell or chrome are frozen but the system as a whole seems fine. During normal operations /sys/kernel/debug/dri/0/radeon_pm_info is the following: power level 0 sclk: 30000 mclk: 120000 vddc: 950 vddci: 1000 pcie gen: 2 When the screen is still for a bit (exactly when it turns blank) the output is power level 0 sclk: 30000 mclk: 15000 vddc: 900 vddci: 850 pcie gen: 2 So apparently, when the video card is clocked down, the output is deactivated. My current "workaround" is running videos on the side - not an ideal solution.
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