# dmidecode -s system-product-name *Vostro 3300* # dmidecode -s system-version *A10*
# lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA *00:02.0 VGA compatible controller [0300]: Intel Corporation Arrandale Integrated Graphics Controller [8086:0046] (rev 18) (prog-if 00 [VGA controller]) 01:00.0 VGA compatible controller [0300]: nVidia Corporation Device [10de:0a75] (rev a2) (prog-if 00 [VGA controller]) * More info: When I use the kernel git branch (drm-nvidia-switch) by Dave Airlied, I get: # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :Pwr:0000:01:00.0 The Intel and Nvidia cards are on. When I try to switch: #echo DIS > /sys/kernel/debug/vgaswitcheroo/switch the LVDS turns off (ouch!), but from a remote login I was able to check the switching state: # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD: :Off:0000:00:02.0 1:DIS:+:Pwr:0000:01:00.0 I can turn on the intel card again # echo ON > /sys/kernel/debug/vgaswitcheroo/switch # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD: :Pwr:0000:00:02.0 1:DIS:+:Pwr:0000:01:00.0 But when I try to switch back to the Intel card the LVDS display turns on, and after a few seconds the system freezes out. echo IGD > /sys/kernel/debug/vgaswitcheroo/switch && dmesg > paste_v3300.dat Here is my dmesg with drm.debug=4 http://pastebin.com/Z5BuPQZG Best, Dante
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