[mythtv-users] mythtv issues at 4K (Intel NUC 12th Gen)

[Gabriel Kuri]

> You can calculate the amount needed for one screenshot:
> hres x vres x coldepth
> For instance: 3840 x 2160 x 256 = 2025 Mbit or 253 Mbyte
> As opposed to: 1920 x 1080 x 16 = 31,6 Mbit or 3,96 Mbyte
>
> So I guess you need at least 512 Mb video memory, but better 1 or 2
> Gbytes or even more.
>

The i915 kernel driver dynamically allocates video memory, apparently it
thinks it has most of the 16GB system memory available to it.

$ glxinfo | egrep -i 'device|memory'
    Device: llvmpipe (LLVM 11.0.1, 256 bits) (0xffffffff)
    Video memory: 15589MB
    Unified memory: no
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