PCMCIA and Interrupts

Support knowledgebase (pcmcia_irq)

Symptom:

The PCMCIA driver assigns only the interrupts 11 and 12 to the PCMCIA slots. Since the built-in PS/2 mouse uses IRQ 12 as well, it cannot be addressed as long as two PCMCIA cards are installed.

Cause:

According to David Hinds, the PCMCIA package's developer, the i82365 driver's interrupt detection code does not work properly.

Solution:

Change the drivers' behavior by setting the variable PCMCIA_PCIC_OPTS in the file /etc/rc.config (SuSE Linux versions up to 7.3) or /etc/sysconfig/pcmcia (from SuSE Linux version 8.0 on) to the following value:

PCMCIA_PCIC_OPTS="do_scan=0 irq_mask=0xefff"
Keywords: PCMCIA, IRQ, INTERRUPT, PS2, MOUSE

SDB-pcmcia_irq, Copyright SuSE Linux AG, Nürnberg, Germany - Version: 07. Mar 1997
SuSE Linux AG - Last generated: 16. Oct 2002 by sdb (sdb_gen 1.40.0)