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Old 08-30-05, 08:21 PM   #13
jsmith_98
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Default Re: Video Ram not detected

How do you update the videocard's BIOS? There's nothing on the nvidia web site about this...

The ASROCK web site has information on updating its BIOS but it's full of blood-curdling warnings about rendering the motherboard unusable.

I think the nvidia agp is not initialized because the Linux agp driver is present.
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Old 08-30-05, 09:35 PM   #14
netllama
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Default Re: Video Ram not detected

jsmith_98,
NVIDIA doesn't provide VBIOS updates, as that is the responsibility of the videocard vendors. Not all of them provide updates, however some do.

Updating any BIOS carries some risk, as you are rewriting code on the chip. Some vendor's highlight the risk more than others.

You can use the NvAGP option with a value of 1 to force the nvidia driver's AGP support.

Thanks,
Lonni
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Old 09-01-05, 11:38 AM   #15
jsmith_98
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Default Re: Video Ram not detected

The only manufacturer listed on the box the card came in was Nvidia. If Nvidia corporation doesn't make video cards, then the manufacturer is anonymous (?!?)
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Old 07-07-06, 07:34 AM   #16
jsmith_98
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Default Re: Video Ram not detected

This continues a thread started about a year ago.

The nvidia driver only detects 32 meg of ram under FreeBSD or Linux although the Windows driver detects all 128 meg.

Looking at the dmesg line for my graphics card, I get:

nvidia0: <GeForce4 MX 440 with AGP8X> mem 0xfd000000-0xfdffffff,0xe0000000-0xe7f

showing that the memory is allocated in two noncontiguous blocks. The nvidia driver only seems to detect the first and not the second (where most of the memory lies).

Actual use of the chip (for games, etc.) implies that only 32 meg of video ram are available to applications.

Suggestions that I tried that didn't correct the problem:

1. Upping the memory declaration in the xorg.conf file.

2. Trying to upgrade the BIOS (my graphics card lists no manufacturer anywhere on the box or instruction leaflet --- even the chips themselves only list the name of their respective manufacturers).
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Old 07-10-06, 11:05 AM   #17
zander
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Default Re: Video Ram not detected

@jsmith_98: the two memory ranges reported in the `dmesg` output are those reported by the graphics card via the BAR0/BAR1 registers in its PCI configuration space, i.e. BAR0, 16MB @ 0xfd000000 and BAR1, 128MB @ 0xe0000000. Which NVIDIA FreeBSD and Windows graphics driver releases are you using, respectively? Can you run the attached application via the commands below and post the output it generates? Has an earlier NVIDIA FreeBSD graphics driver release reported 128MB?

# unzip /path/to/fbsize.zip
# ./fbsize 0xe0000000 0x8000000
Attached Files
File Type: zip fbsize.zip (2.8 KB, 176 views)
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Old 07-11-06, 08:39 AM   #18
jsmith_98
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Default Re: Video Ram not detected

./fbsize 0xe0000000 0x8000000

produces the response

0xe0000000, 33554432 bytes

which looks like 32meg...

I don't know what an earlier graphics driver would have done: I upgraded my graphics card (from one that had 32 meg) at the same time as my graphics driver.

Right now, I'm running

nvidia-driver-1.0.8762

and my uname -a is

FreeBSD jsmith.org 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Thu Jun 15 09:08:42 EDT 2006 jsmith@jsmith.org:/usr/obj/usr/src/sys/MYKERNEL i386


No FreeBSD or Linux nvidia driver has reported 128 meg.

Only the Windows XP driver does this...
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Old 07-11-06, 09:27 AM   #19
jsmith_98
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Default Re: Video Ram not detected

Here's a screenshot from Windows XP. You can see that the nvidia driver reports 128 meg of video ram. Maybe the other information it reports will help...

The main reason I'm pursuing this (after a year of not doing so) is that I'm thinking up upgrading my graphics card and want to be sure the system will be able to access the new card's memory.
Attached Thumbnails
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Views:	190
Size:	69.9 KB
ID:	19249  
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Old 07-11-06, 09:28 AM   #20
zander
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Default Re: Video Ram not detected

Which Windows graphics driver release are you using? Are the 128MB reported in the driver's control panel? The output of the fbsize utility suggests that there really are only 32MB installed on the board, even though it's strapped to report an 128MB BAR1.
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Old 07-11-06, 10:33 AM   #21
jsmith_98
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Default Re: Video Ram not detected

That windows screenshot was from the driver's control panel (as far as I understand things). It was the utility that comes with the driver for configuring various display options.

Are you saying that the card is lying about how much memory it has?
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