Bug 166221

Summary: I need boot parameter pnpacpi=off for parallel port to work
Product: [openSUSE] SUSE LINUX 10.0 Reporter: Philip Tuckey <philtuckey>
Component: KernelAssignee: E-mail List <kernel-maintainers>
Status: RESOLVED DUPLICATE QA Contact: E-mail List <qa-bugs>
Severity: Normal    
Priority: P5 - None    
Version: unspecified   
Target Milestone: ---   
Hardware: i686   
OS: Other   
Whiteboard:
Found By: Other Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description Philip Tuckey 2006-04-14 10:43:43 UTC 
Fujitsu-Siemens Lifebook Ssomething
kernel 2.6.13-15.8-default

With pnpacpi=off, dmesg shows
parport0: PC-style at 0x378 [PCSPP,TRISTATE,EPP]
parport0: faking semi-colon
parport0: Printer, HEWLETT-PACKARD DESKJET 720C
lp0: using parport0 (polling).

Then configuring this printer with YaST works fine, and the same entries show up again in the log - I guess YaST unloads and reloads modules to search for printers.

Without pnpacpi=off, the parport is detected at boot (log as above except using interrupt instead of polling), however thereafter if parport_pc is unloaded then reloaded there is a log message saying that the parport pnp device (00:06) is disabled, and the parport doesn't work - YaST can't see the printer.
Comment 1 Greg Kroah-Hartman 2006-04-14 15:36:32 UTC 

*** This bug has been marked as a duplicate of 116655 ***