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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
video breaks asus-laptop display switching
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. This is an ASUS Z71V based notebook (detected as M7V). Regards, Andrei -- 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/
video breaks asus-laptop display switching
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. This is an ASUS Z71V based notebook (detected as M7V). Regards, Andrei -- 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/
