[SOLVED] Missing Memory

jefro · 04-09-2016, 05:07 PM

I don't doubt it but memtest is something that won't hurt. It should show proper amount of memory on initial screen. A task worth learning too.

However if you are happy and you know it clap your hands.

Fixit7 · 04-09-2016, 05:26 PM

Quote:

Originally Posted by Emerson

Some of your RAM may not be available if you use integrated graphics.

Does my card have integrated graphics ?

Code:

# lspci -vnn | grep VGA -A 12
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
	Subsystem: Hewlett-Packard Company Device [103c:30dd]
	Flags: bus master, fast devsel, latency 0, IRQ 48
	Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 6120 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
	Capabilities: [d0] Power Management version 3
	Kernel driver in use: i915
	Kernel modules: i915

I just noticed that 2nd line says it does. :-)

Does it show how much RAM it uses ?

seasons · 04-09-2016, 06:18 PM

https://en.wikipedia.org/wiki/PCI_hole
https://en.wikipedia.org/wiki/3_GB_barrier

seasons · 04-09-2016, 06:24 PM

Quote:

Originally Posted by Fixit7

Does it show how much RAM it uses ?

...

Code:

Memory at d0000000 (64-bit, non-prefetchable) [size=4M
Memory at c0000000 (64-bit, prefetchable) [size=256M]

It says about 256MB, but Intel uses something called dvmt (dynamic video memory) where it makes that available to the OS if you're not doing anything graphics intensive:
http://www.intel.com/content/dam/sup...lydvmtpdf1.pdf

Fixit7 · 04-09-2016, 07:04 PM

Thanks.

The pdf does not include my chip set.

I read somewhere that if you have 4 gb of RAM, the graphics uses 512M of memory.

No problem as I do not run any graphics intensive games.

BW-userx · 04-13-2016, 07:01 AM

Quote:

Originally Posted by Chris.Bristol

What's integrated graphics?

a card that uses system RAM because it doesn't have it's own to use.