Re: [announce] Intel announces the PowerTOP utility for Linux

[Schmidt Michal <xschmi00@stud.feec.vutbr.cz>]

Ondrej Zary wrote:
> On Tuesday 15 May 2007 02:13:15 Robert Hancock wrote:
> > Looks like the radeon driver has the same problem as the i915 driver
> > mentioned on the known problems page - I get 60 wakeups/sec from it on
> > my Compaq X1000 laptop (Radeon 9000 graphics) while in X, which
> > essentially prevents entry into C3.
>
> And Rage 128 too.

I have a Radeon 7500 in my laptop. The attached hack to disable the 
VBLANK interrupt works for me. I don't know if it breaks 3D, I've only 
tried 2D.

Michal

diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c
index 3ff0baa..a990bb6 100644
--- a/drivers/char/drm/radeon_irq.c
+++ b/drivers/char/drm/radeon_irq.c
@@ -227,9 +227,8 @@ void radeon_driver_irq_postinstall(drm_device_t * dev)
 	atomic_set(&dev_priv->swi_emitted, 0);
 	DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
 
-	/* Turn on SW and VBL ints */
-	RADEON_WRITE(RADEON_GEN_INT_CNTL,
-		     RADEON_CRTC_VBLANK_MASK | RADEON_SW_INT_ENABLE);
+	/* Turn on the SW interrupt */
+	RADEON_WRITE(RADEON_GEN_INT_CNTL, RADEON_SW_INT_ENABLE);
 }
 
 void radeon_driver_irq_uninstall(drm_device_t * dev)