[Bug 91861] [Radeon RS780] Blank screen (no signal) on HDMI after boot in 3.15 & later

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



https://bugzilla.kernel.org/show_bug.cgi?id=91861

--- Comment #14 from Christian König <deathsimple@xxxxxxxxxxx> ---
(In reply to Mike S. from comment #13)
> So, from your explanation, using a ref_div of 7 compared to 2, means that
> the VCO is running at a higher frequency, and hence, higher voltage. So I
> assume that would mean the GPU would be drawing more power & therefore run
> hotter, though I am not sure how significant this is to its overall power
> use.
> 
> Is that right?

No, just the other way around. A higher reference divider results in a lower
post divider and a lower feedback divider and that in turn results in a lower
voltage and lower power consumption.

But the over all power consumption of a PLL compared to the whole system or
even the GFX block is completely neglitable. I would guess something between a
1/1000000 and 1/100000 of a Watt compared to a couple of Watt for the whole
system.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel





[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux