On Sat, Jun 23, 2012 at 08:35:38PM -0500, Bob Tracy wrote: > On Sun, Jun 24, 2012 at 11:59:15AM +1200, Michael Cree wrote: > > On 23/06/12 18:43, Bob Tracy wrote: > > > I recently retired an old AMD K6-III/450 system that had a serviceable > > > USB controller in it, so I tried transplanting it to my Alpha. The > > > kernel seems to detect it just fine and load the appropriate drivers, > > > but there's evidently a conflict of some kind between the USB card and > > > my Radeon 7500. > > > > The infamous PWS PCI DMA hardware bug maybe? > > > > Are you putting the USB card in the 64 bit or 32 bit slot? I think the > > recommendation is *not* to put anything involving data storage in the 64 > > bit slots of any 1st generation PWS.
Five card slots total. Top to bottom, we have three ISA-or-32-bit-PCI slots, and then the two 64-bit PCI slots. The QLOGIC SCSI card and the VIA USB card were in the second and third 32-bit slots repectively, and my Radeon 7500 was in a 64-bit slot. I tried moving the USB card to the top 32-bit PCI slot (reduced top-side component clearance due to a wiring harness, so I couldn't put the video card there), and moved the video card to the slot where the USB card was. No difference. Sliced-up my hand on the sharp sheet metal in the case, so I'll let things cook a while before going back in and removing the USB card (to see if the video strangeness goes away). If it does, I've got a machine with a NCR USB card in it that I'll try in the Alpha, because I'm pretty sure the VIA card will work just fine in that other machine. --Bob -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
