I have found a workaround for the SD card controller in my DELL Latitude 7250 with a SDXC card. I came accross this page: http://www.0xf8.org/2016/01/workaround-for-broken-o2-micro-sd-card-reader-support-since-linux-kernel-version-4-1-8/
By setting "sdhci.debug_quirks2=0x4" as default kernel parameter in the grub configuration file, the 64GB Kingston SD card is now recognized and functional. I tried to put this parameter in /etc/modprobe.d but the controller does not see the SDXC card until it remove and add the module. I have wondered if i should spend the time and trouble in performing a correct full git bisect as suggested by Christopher, but since Blackgr has issued his report on the bug in his latitude 7450 in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1523178 and already did a full git bisect which is now investigated upstream in linux-mmc/sd mailing list and the fact that i have a workaround, i see no pressing need to duplicate this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1514821 Title: SD card reader on Dell E7250 doesn't work in Ubuntu 15.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1514821/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
