Bug 24513 - RIVA TNT Video RAM misdetected
Summary: RIVA TNT Video RAM misdetected
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: anaconda
Version: 7.1
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Brent Fox
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-01-21 19:51 UTC by Pedro Miguel Marques Morais
Modified: 2007-04-18 16:30 UTC (History)
1 user (show)

Clone Of:
Last Closed: 2001-02-12 03:29:08 UTC

Attachments (Terms of Use)
dddprobe output (2.49 KB, text/plain)
2001-02-11 23:10 UTC, Pedro Miguel Marques Morais
no flags Details
svgamodes output; notice resolutions impossible with only 4Mb of RAM (7.71 KB, text/plain)
2001-02-11 23:15 UTC, Pedro Miguel Marques Morais
no flags Details

Description Pedro Miguel Marques Morais 2001-01-21 19:51:51 UTC
Standard RIVA TNT Card, 16 MB
Only 4 MB detected.
(not sure if it is possible to correcty detected it, but...)

[morais@bugs morais]$ /sbin/lspci -s 01:00.0
01:00.0 VGA compatible controller: nVidia Corporation Riva TnT 128 [NV04]
(rev 04)

[morais@bugs morais]$ /sbin/lspci -n -s 01:00.0
01:00.0 Class 0300: 10de:0020 (rev 04)

Comment 1 Jeremy Katz 2001-01-22 04:48:13 UTC
If I remember correctly from Winston, this is due to the nVIDIA cards (among
others) not properly reporting the amount of ram they have onboard when they're

Comment 2 Pedro Miguel Marques Morais 2001-01-22 12:40:33 UTC
I never saw, here in Portugal, a card based in the RivaTNT chipset with less 
than 16 Mb of video ram.
Maybe the probing reports RAM/4?

Comment 3 Michael Fulbright 2001-01-25 00:43:53 UTC
Known issue, ddcprobe returns the wrong value.

Maybe that the card is simply reporting the wrong value.

Comment 4 Brent Fox 2001-01-25 04:13:36 UTC
Can you send the output of ddcprobe?  I've seen this problem before.  I think
what you'll find is that the line that says "Memory installed = " will have
something like "127 * 64k" when what it should say is "128 * 64k".  This causes
the memory to be under-reported by 64k.  I've already added code to check for
this situation.  But anyway, send the output of ddcprobe and we'll see if this
is the problem.

Comment 5 Brent Fox 2001-02-02 22:49:51 UTC
Have you seen this problem with beta 3?

Comment 6 Pedro Miguel Marques Morais 2001-02-10 20:39:05 UTC
bug is not fixed no beta3.
ddcprobe still reports 64kb*64.
I will attach full output from ddcprobe ASAP.

Comment 7 Pedro Miguel Marques Morais 2001-02-11 23:10:41 UTC
Created attachment 9700 [details]
dddprobe output

Comment 8 Pedro Miguel Marques Morais 2001-02-11 23:15:24 UTC
Created attachment 9702 [details]
svgamodes output; notice resolutions impossible with only 4Mb of RAM

Comment 9 Brent Fox 2001-02-12 00:38:49 UTC
I'm afraid there's not much we can do if the card returns bogus ram infomation.

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