Red Hat Bugzilla – Bug 145230
parallel port printing broken by 737 and 741 kernels
Last modified: 2015-01-04 17:15:38 EST
Description of problem:
Parallel port printing is broken by the 737 and 741 kernels. There
is a call trace during bootup indicating that the kernel can't find
the printer. Print jobs are queued but not printed. Adding the two lines
alias parport_lowlevel parport_pc
options parport_pc io=0x378,0x278 irq=7,auto
to /etc/modprobe.conf gets rid of the call trace and the printer will
then work. Below I attach the dmesg output for the 737 kernel (the
problem with 741 is similar).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot up in 737 or 741 with a parallel port printer connected.
Call trace during bootup. Printing doesn't work.
No call trace. Printing should work.
Fix comes from Fedora Forum:
Created attachment 109822 [details]
dmesg output with call trace for 737 kernel
I forgot to mention that this happens to my father with a 6-year old
Emachine, but not to me with a Microtel SYSMAR561, even though our
printers are identical (and both connected to /dev/lp0).
*** This bug has been marked as a duplicate of 145151 ***