I just installed a new, low-end video card in my machine; it's a PCI card
based on the nVidia Riva TNT Vanta chipset. Basically it works fine, with
the very irritating exception of an intermittent flicker of the screen,
more noticeable at high resolutions but existent even in plain text mode.
What's interesting is this: the flicker seems directly related to activity
on the PCI bus. Every time there's a packet on eth0 (a PCI ethernet
card) according to the hub, the screen flickers. Ditto with hard drive
activity (it's a PCI IDE interface) and activity on eth1 (another PCI
ethernet). Haven't noticed much on the SCSI card, but it's not used much
(CD-ROM and Zip).
Has anyone seen such a thing? Any advice?
Information:
Debian 2.2r3
nujoma:~# uname -a
Linux nujoma 2.2.19pre17 #1 Sat Jun 30 15:49:52 EST 2001 i586 unknown
nujoma:~# lspci -v
00:00.0 Host bridge: Intel Corporation 430FX - 82437FX TSC [Triton I] (rev
02)
Flags: bus master, medium devsel, latency 64
00:07.0 ISA bridge: Intel Corporation 82371FB PIIX ISA [Triton I] (rev 02)
Flags: bus master, medium devsel, latency 0
00:0d.0 Ethernet controller: 3Com Corporation 3c590 10BaseT [Vortex]
Flags: bus master, medium devsel, latency 248, IRQ 5
I/O ports at ff20
00:0e.0 Ethernet controller: Intel Corporation 82557 [Ethernet Pro 100]
(rev 02)
Subsystem: IBM Ethernet Pro 10/100
Flags: bus master, medium devsel, latency 66, IRQ 9
Memory at fffbf000 (32-bit, prefetchable)
I/O ports at ff80
Memory at ffe00000 (32-bit, non-prefetchable)
00:0f.0 VGA compatible controller: nVidia Corporation Vanta (rev
15) (prog-if 00 [VGA])
Subsystem: VISIONTEK: Unknown device 0014
Flags: bus master, VGA palette snoop, 66Mhz, medium devsel,
latency 64, IRQ 10
Memory at fe000000 (32-bit, non-prefetchable)
Memory at fa000000 (32-bit, prefetchable)
Capabilities: [60] Power Management version 1
----------------------------------------------------------------------
Andrew J Perrin - [EMAIL PROTECTED] - http://www.unc.edu/~aperrin
Assistant Professor of Sociology, U of North Carolina, Chapel Hill
269 Hamilton Hall, CB#3210, Chapel Hill, NC 27599-3210 USA
