happydemic, to advise, making comments about the Ubuntu kernel upstream is promptly ignored. They don't use Ubuntu kernels.
Despite this, if you would like your issue addressed, it will help immensely if you use Ubuntu with the computer the problem is reproducible with and file a new report via a terminal to provide necessary debugging logs: ubuntu-bug linux Please feel free to subscribe me to it. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1523178 Title: 1217:8520 [Dell Latitude E7450] O2 Micro, SD/MMC Card Reader doesn't work Status in linux package in Ubuntu: Incomplete Bug description: Under ubuntu 15.10 I can't use my Sandisk ultra 64GB microSD (with a SD card adapter) with the built in SD card reader. I seem to be getting the following errors. [ 1268.126602] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 1268.128381] mmc0: tuning execution failed [ 1268.128386] mmc0: error -5 whilst initialising SD card [ 1268.554319] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 1268.556098] mmc0: tuning execution failed [ 1268.556103] mmc0: error -5 whilst initialising SD card [ 1268.993995] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 1268.995778] mmc0: tuning execution failed [ 1268.995786] mmc0: error -5 whilst initialising SD card [ 1269.453666] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 1269.455449] mmc0: tuning execution failed [ 1269.455458] mmc0: error -5 whilst initialising SD card It was working fine under vivid with kernel 3.19. Went through all the kernels from 3.19 to 4.2 (http://kernel.ubuntu.com/~kernel-ppa/) and found out that until 4.1.8-040108-generic the SD card reader would play fine and only after I put 4.1.9 and on I started getting the errors. WORKAROUND: rmmod sdhci sdhci_pci sdhci_acpi modprobe sdhci debug_quirks2="0x10000" modprobe sdhci_pci ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-19-generic 4.2.0-19.23 ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6 Uname: Linux 4.2.0-19-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: alex 1606 F.... pulseaudio /dev/snd/controlC0: alex 1606 F.... pulseaudio /dev/snd/controlC1: alex 1606 F.... pulseaudio CurrentDesktop: Unity Date: Sun Dec 6 01:40:18 2015 HibernationDevice: RESUME=UUID=acf75838-59f9-4461-9fe4-e9bdf33b28be InstallationDate: Installed on 2015-10-27 (38 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: Dell Inc. Latitude E7450 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic root=UUID=c654e4bc-b0e1-4a85-844f-99f068b2efff ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-19-generic N/A linux-backports-modules-4.2.0-19-generic N/A linux-firmware 1.149.3 SourcePackage: linux UpgradeStatus: Upgraded to wily on 2015-11-04 (31 days ago) dmi.bios.date: 10/28/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0R1VJD dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd10/28/2015:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0R1VJD:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1523178/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
