On 07/02/2017 03:42 AM, Bertho Stultiens wrote:
On 07/02/2017 08:20 AM, Valerio Bellizzomi wrote:
So, some BIOS code or kernel module seems
to be talking to the parallel port card. That is a PCIe
Netmos 9900 chip, which I've used on a bunch of Dell boxes
with no trouble.
Does anybody have any idea what module might be doing this?
(and, how to turn it off)
have you tried to turn off acpi support in the bios ?
Could it be that the card is in ECP mode (instead of EPP) and there is a
device auto-detect process probing the port at intervals?
Well, there is BIOS support for on-mobo ports, which this
machine does not have. The BIOS support for PCIe plug-in
cards should handle PCI PnP enumeration and then leave it
alone, I would think.
Anyway, 3 different PCIe ports all malfunction in various
ways, and another PCI card is misidentified and doesn't
enumerate, so their BIOS seems to be pretty pathological. I
finally found ONE PCI card that does work.
Jon
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