Ubuntu
linux package

  1. Bug #768497
  2. Comment #12

Comment 12 for bug 768497

Revision history for this message
Rocko (rockorequin) wrote : Re: Acer Aspire 5943G JMicron devices not seen unless system boots with SD card inserted

I have the same reader in a Dell XPS 15 L502x, and the pciehp.pciehp_force=1 parameter doesn't help, even with kernel 3.0-rc1.

The only way to get the system to detect the reader is either to boot with a SD card already inserted, or to force an PCI bus rescan after an SD card is inserted (sudo sh -c "echo 1 > /sys/bus/pci/rescan"). Once the kernel detects the reader, there's no need to rescan.