| Explanation: |
Such problem usually means that selected IRQ (by default 11) doesn't work.
It's usually due to one of two problems:
- Improper Interrupt mode
Several CardBus adapters allow different hardware implementations for IRQ routing.
If you are using any recently manufactured notebook, there is a good
chance that correct interrupt mode is properly set by the BIOS. If you are
using old notebook or desktop, you may need try various versions of /IM
switch to find proper interrupt mode. Exact values for /IM switch are adapter depended.
- Improper PCI IRQ routing by BIOS
The BIOS usually pre-program routing of the IRQ from every particular PCI slot
to certain IRQs. Those routings are stored in BIOS inside so called PCI
IRQ routing table. In our experience on many machines the PCI IRQ routing
table is incorrect or/and incomplete. The PCI BIOS provides an API that
allow update PCI IRQ routing table, if required. Unfortunately in many
system updating of the routing table when CardBus card is inserted may
cause end-less interrupt and hang the system.
By default, APA-1480 enabler doesn't try modify the routing table if required
routing is already in the table. You may force unconditional update of PCI
IRQ Routing table using the /FI switch to APA-1480 enabler command line.
If after adding /FI switch system appear to hang during APA-1480 enabler
load, we recommend to remove the /FI and simply try to find working IRQ by trying. |
| Solution: |
Check selected interrupt mode.
Use /PI:n to change used IRQ number. Try different values for n (usually in
following order: 11, 10, 9, 5, 7, 3, 4) until you found the working
combination. |