[Bug 48772] Signal unstable over Display Port on 2560x1440 monitor

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Apr 18 14:21:14 PDT 2012


--- Comment #9 from Roland Scheidegger <sroland at vmware.com> 2012-04-18 14:21:14 PDT ---
(In reply to comment #8)
> That's the max theoretical mode supported by the chip.  Whether or not you can
> drive a monitor that big probably depends on the type and speed of dram in your
> system since the GPU (display controllers, 3D engine, etc.) and the CPU have to
> share dram bandwidth.

I never really understood this problem, not since the days of sdr. Single
channel ddr3-1066 provides roughly 8 times the raw bandwidth of what a
2560x1440 resolution (at 32bpp, 60hz) needs so that should be plenty to serve
other MC clients as well (with lesser priority). So what's the problem there,
too small buffer size for scanout?

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