Red Hat Bugzilla – Bug 178615
Serial port initialization failure of internal USR 3CP5610 hardware modem
Last modified: 2015-01-04 17:24:30 EST
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Description of problem:
My internal PCI hardware modem USR 3CP5610 does not get initialized
for current kernels.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Launch "system-config-network".
2. Add new modem connection.
Actual Results: No modem found.
Expected Results: The modem should have been detected an set up properly.
The modem used to work for every Red Hat/Fedora version since
RHL 7.1. The device number changed from time to time: /dev/ttyS4,
/dev/ttyS14, etc. In "/var/log/dmesg", a related error message
"Couldn't register serial port 0000:00:0f.0: -28"
The serial port gets routed to IRQ 153 as gets the on-board
Adaptec AIC-7880U SCSI controler chip. See outputs of "dmesg"
and "lscpi -vv" command attached to this report. Adding "noapic"
to the kernel options does not make a difference.
I checked the correct function of the hardware with a Linux
live CD which detected the modem and configured it at /dev/ttyS2.
Created attachment 123542 [details]
Output of "dmesg" for 2.6.15-1.1864_FC5smp kernel
Created attachment 123543 [details]
Output of "lspci -vv" for 2.6.15-1.1864_FC5smp kernel
does todays kernel work for you ?
Tried kernel 2.6.15-1.1871_FC5smp and works. Not too surprising given
the changelog entry:
* Sun Jan 22 2006 Dave Jones <firstname.lastname@example.org>
- Make serial /dev nodes get created for pci modems again.
cool, glad that worked :)