Controlling screen brightness (backlight)
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The radeonhd now works just fine for me (a bit of 2D acceleration would be better, but I'd rarely notice any difference), except for the brightness control: I cannot control the brightness of my laptop screen, except by switching to the linux console, changing the brightness there, and switching back to the X11 vt. For what it's worth, the brightness control works just fine with the vesa driver (which I used to use before radeonhd came along). On the linux console and under X11 using the vesa driver, I can control the brightness with echo FOO >/sys/class/backlight/acpi-video0/brightness or by hitting the appropriate Fn-key combination. Under X11 using the radeonhd driver, no amount of echoing to the /sys files has any effect. The Fn-key combinations do not work either, although it seems that they are properly handled: they are recognized by some piece of software that displays a little "brightness" icon together with some brightness-level info (tho it seems to always show I'm at the minimum brightness), but the actuall screen brightness is unaffected. So I think the key-handling is right, but that the radeonhd driver somehow interferes with the low-level ACPI-brightness settings. This is on a Thinkpad T60 running Debian testing (including the Xorg which is either version 7.2 or 1.3 depending on how you look at it) with a radeonhd compiled by hand directly from the git. Stefan -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org
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Stefan Monnier