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https://bugs.launchpad.net/bugs/1737423
Title:
With a (cheap) video card in PCI Geforce 6200 (NV44A) with 256Mb video
memory misdetected as 512 Mb : result was kernel panic in worst case
and memory crash in best case
Status in linux package in Ubuntu:
New
Bug description:
Under XP
card detected as
PCI\VEN_10DE&DEV_0221&SUBSYS_00000000&REV_A1\4&3A321F38&0&48F0
PCI\VEN_10DE&DEV_0221&SUBSYS_00000000&REV_A1\4&3A321F38&0&48F0
PCI\VEN_10DE&DEV_0221&SUBSYS_00000000&REV_A1
PCI\VEN_10DE&DEV_0221&CC_030000
memory range 94000000 94FFFFFF
memory range C0000000 DFFFFFFF
memory range 92000000 92FFFFFF
IRQ 09
IO range 03B0 03BB
IO range 03C0 03DF
memory range 000A0000 000BFFFF
Processeur graphique : GeForce 6200
Version du pilote : 307.83
Prise en charge DirectX : 9.0c
Horloge principale : 300 MHz
Débit de données mémoire : 1064 MHz
Interface de mémoire : 64 bits
Mémoire : 256 Mo
Type de mémoire : DDR2
Version BIOS vidéo : 5.44.A2.10.26
IRQ : 9
Bus : PCI
correctly detected as 256Mb and working
Under linux
file /var/log/Xorg.0.log
contains 18.759] (--) PCI: (0:3:9:0) 10de:0221:0000:0000 rev 161, Mem @
0x94000000/16777216, 0xc0000000/536870912, 0x92000000/16777216, BIOS @
0x????????/131072
card bad detection ... 0xc0000000/536870912 correct adress, wrong size
536870912 soit 512Mo
output of:
sudo lshw -C display; lsb_release -a; uname -a
is
jean@jean-Soisy:~$ sudo lshw -C display; lsb_release -a; uname -a
[sudo] password for jean:
*-display
description: Display controller
produit: 82865G Integrated Graphics Controller
fabriquant: Intel Corporation
identifiant matériel: 2
information bus: pci@0000:00:02.0
version: 02
bits: 32 bits
horloge: 33MHz
fonctionnalités: pm bus_master cap_list rom
configuration: driver=i915 latency=0
ressources: irq:16 mémoire:a0000000-a7ffffff mémoire:90000000-9007ffff
portE/S:1800(taille=8)
*-display
description: VGA compatible controller
produit: NV44A [GeForce 6200]
fabriquant: NVIDIA Corporation
identifiant matériel: 9
information bus: pci@0000:03:09.0
version: a1
bits: 32 bits
horloge: 66MHz
fonctionnalités: pm vga_controller bus_master cap_list rom
configuration: driver=nouveau latency=40 maxlatency=1 mingnt=5
ressources: irq:21 mémoire:94000000-94ffffff mémoire:c0000000-dfffffff
mémoire:92000000-92ffffff mémoire:e0000000-e001ffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
Linux jean-Soisy 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 11:56:31 UTC
2017 i686 i686 i686 GNU/Linux
Attempted to find where the memory size detection lies in the code,
but was too far in the labyrinth for me.
Regards
Jean COLIN
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