| Priority | medium |
|---|---|
| Bug ID | 65377 |
| Assignee | dri-devel@lists.freedesktop.org |
| Summary | Backlight control via /sys/class/backlight/radeon_bl0 not working |
| Severity | normal |
| Classification | Unclassified |
| OS | Linux (All) |
| Reporter | bastian.triller@gmail.com |
| Hardware | x86-64 (AMD64) |
| Status | NEW |
| Version | XOrg CVS |
| Component | DRM/Radeon |
| Product | DRI |
This is a Macbook pro 8,2 with an Intel HD Graphics 3000 [8086:0116] and an AMD Radeon HD 6750M [1002:6741]. The backlight interface in /sys/class/backlight/radeon_bl0 does not work. Echoing to "brightness" does not change the brightness of the Monitor. There is also an apple_gmux interface, which works though. I've bound xbacklight to the brightness keys to control the brightness, but it looks like it's confused about which interface it should use: $ xbacklight -inc 5 No outputs have backlight property When I disable the Radeon card on boot and use the Intel card, xbacklight works.
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