Messages in this thread | | | Date | Sun, 18 Feb 2007 23:46:16 -0500 | From | Yaroslav Halchenko <> | Subject | no backlight on radeon after recent kernel "upgrade"s |
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Dear Kernel Developers,
Since the most recent successful for me kernel 2.6.19-rc6-mm1, I've tried few times to build more recent snapshots and now finally 2.6.20-mm2. In all those cases I have a sad outcome -- kernel boots but at some point during boot (few moments after Penguin icon in the top left corner appears), light turns off... I still can see something, especially if I light a strong flashlight at a sharp angle.
I've enabled back-light support and lcd support for those unsuccessful kernels (with all backlight support features disabled kernel boots ok and backlight shines as bright as always)
All my changes of values for files under /sys/class/backlight/radeonbl0 had no impact on the screen. Also I had no files under /sys/class/lcd.
Running radeontool light off caused complete turning off of LCD - I could not see anything anymore.
sony's spictl -b had no effect as well.
Config can be found at http://www.onerussian.com/Linux/bugs/nobacklight.1/config-2.6.20-mm2 lshw http://www.onerussian.com/Linux/bugs/nobacklight.1/lshw other details are available from http://www.onerussian.com/Linux/bugs/nobacklight.1/
Could you please advise? -- Yaroslav Halchenko Research Assistant, Psychology Department, Rutgers-Newark Student Ph.D. @ CS Dept. NJIT Office: (973) 353-5440x263 | FWD: 82823 | Fax: (973) 353-1171 101 Warren Str, Smith Hall, Rm 4-105, Newark NJ 07102 WWW: http://www.linkedin.com/in/yarik - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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