I have a DELL E7250 Latitude and after the upgrade from 15.04 my SD cardreader cannot read the Kingston 64GB SDXC anymore. Same error messages in dmesg:
[ 1.886833] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 1.888611] mmc0: tuning execution failed [ 1.888616] mmc0: error -5 whilst initialising SD card lspci output fom kernel 4.2.0-18 01:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01) (prog-if 01) Subsystem: Dell Device 062d Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f7101000 (32-bit, non-prefetchable) [size=4K] Memory at f7100000 (32-bit, non-prefetchable) [size=2K] Capabilities: [6c] Power Management version 3 Capabilities: [48] MSI: Enable- Count=1/1 Maskable+ 64bit+ Capabilities: [80] Express Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [230] Latency Tolerance Reporting Capabilities: [240] L1 PM Substates Kernel driver in use: sdhci-pci -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509119 Title: Dell Venue pro 11 7140 card reader not working. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509119/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs