[ltp] Re: PCI video card in dock II is not detected

Connor Behan linux-thinkpad@linux-thinkpad.org
Tue, 02 Mar 2010 19:31:03 -0500


I just checked my BIOS settings and they look pretty standard. IRQ 11 
for all devices, LCD as the default display, AGP as the default adapter 
and Automatic for PCI Power Bus Management. I know they used to be 
different but I probably reset my BIOS to the default settings while 
messing around with other stuff since then and the card kept working.

There are other modules in drivers/pci/hotplug like acpiphp, ibmphp and 
fakephp but I don't know if those will help. When I first had this 
problem I went to the LKML for help and they said modules won't make 
anything more likely to appear in "lspci."

I never thought about the possibility that X31 doesn't connect to the 
pins for the PCI slot. It would be unfortunate if this were the case. 
Are you sure the presence of "PCI docking bridge" in "lspci" eliminates 
this concern? I would think any laptop compatible with the dock (whether 
or not it uses the PCI slot) connects to the docking bridge so as to use 
internal PCI devices like the cardbus slots and usb ports on the dock.

Do you have other PCI video cards lying around that you could try? I 
have come across PCI video cards that don't work in the dock for some 
unknown reason.. even ones that use the same chipset. e.g. the Radeon 
X1550 that I use actually belongs to my friend. The one I ordered worked 
perfectly in any desktop computer but was not detected by the dock. His 
works in both so we traded. I have no idea why.

Some things about the dock's PCI bus are nonstandard like the inability 
to set latency timers. Maybe the OS you use makes a difference. If the 
card you have is the exact same chipset and manufacturer as a card 
recommended for use with the dock on ThinkWiki, the person who edited 
ThinkWiki may have used windows. I've never tried using windows with a 
Dock II. Maybe it has more success with these cards that mysteriously 
don't show up in "lspci" when docked.

Best of luck.