https://bugs.freedesktop.org/show_bug.cgi?id=38030
--- Comment #42 from Hans Nieser <[email protected]> 2012-01-07 05:59:27 PST --- Just wanted to chime in here as I'm having an identical issue with DPMS, the exact sequence for me is: 1) Invoke "sleep 5; xset dpms force off" 2) Display goes fully black, with backlight off, 2-4 seconds pass 3) Backlight turns on, OSD pops up and says "DVI", a second or so passes 3) OSD says "No signal", a second or so passes 4) Go to 2 One interesting thing is that I have two identical displays (2 x Iiyama ProLite B2409HDS) where one is connected via DVI, the other is connected on the second DVI port but using a DVI->VGA(D-SUB) adapter. However, the DPMS problem only happens on the display connected on the DVI port, not the one that is connected with an VGA cable. With both displays connected and enabled (mirror mode), the VGA one turns off and stays off, the DVI one goes into the cycle described above when DPMS 'off' activates. Trying with only one display connected via either DVI or VGA does not change anything; via DVI I get the DPMS cycle, via VGA it appears to work correctly. Specs: Sapphire Radeon Vapor-X HD5850 1G GDDR5 Dual DVI-I/HDMI/DP libdrm from git master (adf1428915bfd0ee24758a3cbd56ce9b64f6eefb) xf86-video-ati from git master (eb6d769a087b2ed5952f477fc3f0b0625810a287) mesa from git master (1f125374e73d1718cd54c946826c76b09998c055) linux 3.1.6 xorg-server 1.11.3 gentoo Turning off the display's 'Signal select: auto', explicitly setting it to 'DVI', doesn't seem to help in my case. I'll try the patch mentioned in previous comments as well. Also, setting "drm_kms_helper.poll=0" on the kernel commandline (something which chithead suggested on #radeon IRC) didn't help either I only installed this card today to replace an NVIDIA gpu that didn't perform well under Gnome 3, so I'm not sure if this is some kind of regression. I do remember having this problem before when I had this card installed in another PC months ago, so I think this problem has been around for a while. I've not had this problem with the nvidia GPU, and I might try fglrx later to see if it happens there -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
