PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

tommylight
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24 Mar 2025 15:31 #324784 by tommylight

Replied by tommylight on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

From Longdons:
Ubiuntu:

02:00.0 Parallel controller [0701]: SUNIX Co., Ltd. Multiport serial controller [1fd4:1999] (prog-if 03 [IEEE1284])
    Subsystem: SUNIX Co., Ltd. Multiport serial controller [1fd4:0100]
    Flags: bus master, fast devsel, latency 0, IRQ 16, IOMMU group 13
    I/O ports at e030 [size=8]
    I/O ports at e020 [size=8]
    I/O ports at e000 [size=32]
    Capabilities: [60] Power Management version 3
    Capabilities: [68] MSI: Enable- Count=1/32 Maskable+ 64bit+
    Capabilities: [80] Express Legacy Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Kernel driver in use: parport_serial
    Kernel modules: parport_serial

Debian:

02:00.0 Parallel controller [0701]: SUNIX Co., Ltd. Multiport serial controller [1fd4:1999] (prog-if 03 [IEEE1284])
	Subsystem: SUNIX Co., Ltd. Multiport serial controller [1fd4:0100]
	Flags: bus master, fast devsel, latency 0, IRQ 16, IOMMU group 13
	I/O ports at e030 [size=8]
	I/O ports at e020 [size=8]
	I/O ports at e000 [size=32]
	Capabilities: [60] Power Management version 3
	Capabilities: [68] MSI: Enable- Count=1/32 Maskable+ 64bit+
	Capabilities: [80] Express Legacy Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Kernel driver in use: parport_serial
	Kernel modules: parport_serial

-
So both show drivers and modules loaded, leading to conclude not a Linux issue.
Back to chasing bus master and other flags, although we already have instances where bus master shows and does not show with the corresponding driver/module showing and not showing.

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langdons
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24 Mar 2025 15:33 #324786 by langdons

Replied by langdons on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

My PC is an old, cheapo HP Compaq.

The following user(s) said Thank You: tommylight

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langdons
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24 Mar 2025 18:01 #324802 by langdons

Replied by langdons on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

To OP:
Try changing 0xd000 to 0xd010
See if that works.

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langdons
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24 Mar 2025 18:07 #324805 by langdons

Replied by langdons on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

i think you should always try the first "IO ports at... XXXX ...".

If that gives an error, try every "" port in order until you get no error.

If they all give an error, then IDK.

The parport_serial kernel module works.

Was the parallel port card installed when you installed Linux?

Make sure all necessary hardware is in the machine when you install, and make sure all unnecessary hardware is not in the machine during the time of installation.

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langdons
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24 Mar 2025 18:10 #324806 by langdons

Replied by langdons on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

Maybe just buy a Sunix card; they are very inexpensive.

I might be able to get an extra one for free.

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unknown
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24 Mar 2025 20:30 #324816 by unknown

Replied by unknown on topic PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

No need to guess,

sudo cat /proc/ioports

Then look for the an entry mentioning a parallel port, it's been mentioned a number of times throughout the thread

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