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Message-ID: <Pine.LNX.4.64.0712220013030.31611@roof> Date: Sat, 22 Dec 2007 00:21:57 -0800 (PST) From: Andrei Gaponenko <andrei.gaponenko@...n.ch> To: Zhang Rui <rui.zhang@...el.com> cc: linux-kernel@...r.kernel.org, corentincj@...aif.net, sziwan@...rs.sourceforge.net Subject: Re: video breaks asus-laptop display switching On Sat, 22 Dec 2007, Zhang Rui wrote: > On Sat, 2007-12-22 at 06:36 +0800, Andrei Gaponenko wrote: >> >> With 2.6.23 or newer (including 2.6.24-rc6) kernels, writing to the >> /sys/devices/platform/asus-laptop/display file does not do anything: >> ... >> > hmm, please "echo 1 > /proc/acpi/video/xxx/DOS" in 2.6.23 and see > if there is any difference. ls /proc/acpi/video/ shows two identically named directories "VGA" - is this normal?? Anyway, # cat VGA/DOS DOS setting: <1> # echo 3 > VGA/DOS # cat VGA/DOS DOS setting: <3> but no image on external. Now # rmmod video # echo 3 > /sys/devices/platform/asus-laptop/display Got image on external # modprobe video # cat VGA/DOS DOS setting: <0> I can write 1 or 3 to DOS and read it back, but it has no effect (image on external turned on while video module was removed does not go away). Please Cc: me on replies - forgot to mention this in the initial posting. Thanks! Andrei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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