On Thu, Jun 26, 2008 at 2:58 AM, Jhih-Sin Chen <[EMAIL PROTECTED]> wrote: > On 6/25/08, Alex Deucher <[EMAIL PROTECTED]> wrote: >> On Wed, Jun 25, 2008 at 10:50 AM, Jhih-Sin Chen <[EMAIL PROTECTED]> wrote: >> > On Wed, Jun 25, 2008 at 10:26 PM, Alex Deucher <[EMAIL PROTECTED]> wrote: >> >> On Wed, Jun 25, 2008 at 9:56 AM, Jhih-Sin Chen <[EMAIL PROTECTED]> wrote: >> >>> Hi, >> >>> >> >>> I am using Radeon HD 3470 card with xf86-video-ati 6.8.192 on my laptop. >> >>> I try to implement hotkey function to switch display device. >> >>> I have set _DOS parameter in ACPI and ask VBIOS to switch display >> >>> device but it fails. >> >>> >> >>> However, the hotkey function can switch display device successfully >> >>> when I use "vesa" driver. >> >>> Do you have any suggetion on this issue? Thanks. >> >> >> >> It's disabled on purpose. The bios goes behind the driver's back and >> >> messes with the hardware which can lead to bad state or possibly hw >> >> locks. You can control the outputs with xrandr so please use that. >> >> On most laptops you can even change the video hotkey to produce acpi >> >> events rather than banging the hw directly and then you tie that event >> >> to a script that runs xrandr commands. >> >> >> >> Alex >> >> >> > >> > Hi, >> > >> > But I can't use xrandr to swtich display device to HDMI. Is it a >> > limitation of xrandr or anything wrong? >> > >> >> what sort of problem are you having? >> xrandr --output HDMI-0 --auto >> should do the trick. >> >> What does the output of xrandr look like? > > "xrandr -q" always show "hdmi-0 disconnected" even if my laptop > connect to HDMI device. > "xrandr --output HDMI-0 --auto" show nothing and can't switch to HDMI. > > Where is the start point to debug this issue? Thank you. >
We'd need to see your log. Can you post your xorg log and config? In the meantime you can force the output on with xrandr using something like: xrandr --newmode "1024x768R" 56.00 1024 1072 1104 1184 768 771 775 790 +hsync -vsync xrandr --addmode HDMI-0 "1024x768R" xrandr --output HDMI-0 --mode "1024x768R" Replace the 1024x768 mode with whatever mode you want to use on your HDMI port. you can generate the modeline with cvt: cvt -r 1024 768 60 or (non-reduced blanking modes): cvt 1024 768 60 Thanks, Alex _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
