On Sat, 2007-12-22 at 06:36 +0800, Andrei Gaponenko wrote: > > Hi, > > 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: > > Cold boot to single user, then connect an external monitor > > # cat /sys/devices/platform/asus-laptop/display > 1 > > OK, only the built in LCD is enabled. Try to enable > the external monitor as well: > > # echo 3 > /sys/devices/platform/asus-laptop/display > > still no image on the external. > > # cat /sys/devices/platform/asus-laptop/display > 1 > > Still "1", not the "3" we wrote. On the other hand if I boot with an > external monitor attached, the "display" file always contains 3, even > after writing 1 there, and there is image on both monitors. > > In 2.6.22 I had to load asus-laptop by hand, but then display > switching worked nicely. > > I've noticed that if I do > > # rmmod video > > display switching starts working again with the newer kernels. > The "video" module was auto-loaded on my system in 2.6.22, but > did not cause the conflict. hmm, please "echo 1 > /proc/acpi/video/xxx/DOS" in 2.6.23 and see if there is any difference.
Thansk, Rui -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
