Messages in this thread | | | Date | Wed, 6 Jan 2010 19:09:50 +0100 | From | Johan Hovold <> | Subject | Re: [PATCH] drm/kms: fix fbdev blanking regression |
| |
> > Commit 731b5a15a3b1474a41c2ca29b4c32b0f21bc852e (drm/kms: properly > > handle fbdev blanking) breaks console blanking on my laptop (GM45 > > chipset). Instead of blanking the screen, it is dimmed and then the > > backlight starts "glowing" in the lower edges of the screen. The glowing > > then slowly spreads upwards. Does not look healthy at all... > > > > This patch reverts to the old behaviour of going directly to > > DPMS_STANDBY. > > The current fbdev blank is correct. Normal blanking doesn't power down > the hsync or the vsync signals. If you look at fbdev drivers you will see > this type of behavior. If you want a full power down then a FB_BLANK_POWERDOWN > is needed. As for the blacklight that is a another problem not related to > this issue. The fbdev layer sends a event to the backlight layer to tell > it to power down. That powerdown happens for the backlight in all cases > except FB_BLANK_UNBLANK. How is your backlight setup. Is the backlight > handled via the DRI driver or acpi? >
The change itself looks correct but it triggers something that seems to hurt my screen bad. :)
The backlight is handled via the DRI driver I assume. At least i9xx_crtc_dpms is called on powerdown.
| |