For further investigation, I booted Linux 3.10-rc3 with pcie_aspm=off so the kernel does not change the settings that the BIOS activates. The BIOS dictates that ASPM must be disabled for the card reader but it enables L1, as you can see in the attached files.
** Attachment added: "output of lspci -xxx" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178131/+attachment/3690806/+files/lspci_xxx.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178131 Title: 14e4:16bc SD card slot not working on Acer Aspire One 756 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178131/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
