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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NV118] GM108 not supported by nouveau"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89558#c26">Comment # 26</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [NV118] GM108 not supported by nouveau"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89558">bug 89558</a>
from <span class="vcard"><a class="email" href="mailto:smf.linux@ntlworld.com" title="SMF <smf.linux@ntlworld.com>"> <span class="fn">SMF</span></a>
</span></b>
<pre>(In reply to SMF from <a href="show_bug.cgi?id=89558#c24">comment #24</a>)
<span class="quote">> (In reply to SMF from <a href="show_bug.cgi?id=89558#c23">comment #23</a>)
> > (In reply to SMF from <a href="show_bug.cgi?id=89558#c21">comment #21</a>)
> > > Using cpu-z on windows the graphics tab shows the Intel device as having 4GB
> > > and the Nvidia devices is reported as 1GB.
> >
> > The literature that came with the laptop suggests that the VRAM is 4 GB
> > (NVIDIA GT840M 4 GB) so I think the answer is YES. My orginal hesitation
> > stems from the fact that the intel drm is reporting 2GB:
> >
> > [ 0.669881] Linux agpgart interface v0.103
> > [ 0.669993] [drm] Initialized drm 1.1.0 20060810
> > [ 0.670484] [drm] Memory usable by graphics device = 2048M
> > [ 0.670569] [drm] Replacing VGA console driver
> > [ 0.671121] Console: switching to colour dummy device 80x25
> > [ 0.689829] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> >
> > That may be a miscalculion/limitation for this system. Could this be a
> > consequence of this systems Intel/Nvidia hybrid setup?
>
> Does the fact that my kernel and os are built for 32bit pae limit the drm
> vram to less than that physically present i.e. limited to 2G in this case?</span >
The value being returned by the intel driver is the GTT size not the total VRAM
size (See explanation from Chris Wilson <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED NOTABUG - Haswell i915 kernel drm driver reports 2G usable VRAM, system specifation reports 4G available."
href="show_bug.cgi?id=89804">bug 89804</a>).</pre>
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