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[Sander Jonkers <1417263@xxxxxxxxxxxxxxxxxx>]

FWIW: the "Read-only file system" error occured again. See below.

Nothing special in dmesg nor /var/log/syslog


sander@superstream:~$ pwd
/home/sander

sander@superstream:~$ touch blabla
touch: cannot touch ‘blabla’: Read-only file system

sander@superstream:~$ mount
/dev/mmcblk0p5 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /sys/firmware/efi/efivars type efivarfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
/dev/mmcblk0p1 on /boot/efi type vfat (rw)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=sander)
/dev/mmcblk0p4 on /media/sander/Images type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/mmcblk0p3 on /media/sander/Windows type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

mount: warning: /etc/mtab is not writable (e.g. read-only filesystem).
       It's possible that information reported by mount(8) is not
       up to date. For actual information about system mount points
       check the /proc/mounts file.

sander@superstream:~$

-- 
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/1417263

Title:
  sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning
  procedure, falling back to fixed sampling clock

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On my HP Stream 13 laptop with Ubuntu 14.04 LTS (fully updated) I
  sometimes (once an hour?) get the error below in dmesg. It has to do
  with the eMMC / eMMC reader. There is no other flash device (like a
  USB key) installed or in use.

  Yesterday the file system turned read-only. I had to reboot to get it
  read-write again.

  [ 2666.946287] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock
  [ 2666.948450] ------------[ cut here ]------------
  [ 2666.948477] WARNING: CPU: 0 PID: 3597 at /build/buildd/linux-3.13.0/drivers/mmc/host/sdhci.c:989 sdhci_send_command+0xc32/0xd60 [sdhci]()
  [ 2666.948479] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek rfcomm bnep nls_iso8859_1 hid_generic hp_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event intel_rapl snd_rawmidi coretemp arc4 kvm crct10dif_pclmul crc32_pclmul usbhid snd_seq hid ghash_clmulni_intel rtl8723be btcoexist cryptd snd_seq_device rtl8723_common snd_timer rtl_pci rtlwifi btusb bluetooth mac80211 serio_raw snd rtsx_pci_ms memstick i915_bdw cfg80211 intel_ips drm_kms_helper soundcore drm i2c_algo_bit wmi hp_wireless video parport_pc ppdev joydev mac_hid lp parport mmc_block rtsx_pci_sdmmc psmouse rtsx_pci sdhci_acpi sdhci
  [ 2666.948522] CPU: 0 PID: 3597 Comm: chromium-browse Not tainted 3.13.0-45-generic #74-Ubuntu
  [ 2666.948524] Hardware name: Hewlett-Packard HP Stream Notebook PC 13/802A, BIOS F.05 11/28/2014
  [ 2666.948527]  0000000000000009 ffff880076a03d28 ffffffff81720eb6 0000000000000000
  [ 2666.948531]  ffff880076a03d60 ffffffff810677cd 0000000000000002 ffff88003fb7ac00
  [ 2666.948535]  ffff880071b77ad0 ffff880071b77b10 ffff88003f9b74c0 ffff880076a03d70
  [ 2666.948539] Call Trace:
  [ 2666.948542]  <IRQ>  [<ffffffff81720eb6>] dump_stack+0x45/0x56
  [ 2666.948554]  [<ffffffff810677cd>] warn_slowpath_common+0x7d/0xa0
  [ 2666.948557]  [<ffffffff810678aa>] warn_slowpath_null+0x1a/0x20
  [ 2666.948564]  [<ffffffffa0003aa2>] sdhci_send_command+0xc32/0xd60 [sdhci]
  [ 2666.948569]  [<ffffffff813709aa>] ? delay_tsc+0x4a/0x80
  [ 2666.948573]  [<ffffffff813708dc>] ? __const_udelay+0x2c/0x30
  [ 2666.948579]  [<ffffffffa0001164>] ? sdhci_reset+0xa4/0x1b0 [sdhci]
  [ 2666.948585]  [<ffffffffa00043e5>] sdhci_finish_data+0x115/0x3c0 [sdhci]
  [ 2666.948591]  [<ffffffffa0004c00>] sdhci_irq+0x350/0x8e3 [sdhci]
  [ 2666.948596]  [<ffffffff810bfa5e>] handle_irq_event_percpu+0x3e/0x1d0
  [ 2666.948600]  [<ffffffff810bfc2d>] handle_irq_event+0x3d/0x60
  [ 2666.948604]  [<ffffffff810c2e4a>] handle_fasteoi_irq+0x5a/0x100
  [ 2666.948608]  [<ffffffff81015e5e>] handle_irq+0x1e/0x30
  [ 2666.948613]  [<ffffffff81733c9d>] do_IRQ+0x4d/0xc0
  [ 2666.948618]  [<ffffffff817293ad>] common_interrupt+0x6d/0x6d
  [ 2666.948619]  <EOI>  [<ffffffff81728d4b>] ? _raw_spin_unlock_irqrestore+0x1b/0x40
  [ 2666.948627]  [<ffffffff810aaf80>] __wake_up_sync_key+0x50/0x60
  [ 2666.948632]  [<ffffffff811c66dd>] pipe_write+0x43d/0x520
  [ 2666.948637]  [<ffffffff811bd45a>] do_sync_write+0x5a/0x90
  [ 2666.948641]  [<ffffffff811bdbe4>] vfs_write+0xb4/0x1f0
  [ 2666.948644]  [<ffffffff811be619>] SyS_write+0x49/0xa0
  [ 2666.948648]  [<ffffffff81731b7f>] tracesys+0xe1/0xe6
  [ 2666.948651] ---[ end trace 6d4cc2b5a74f9ad2 ]---
  [ 2666.950730] mmcblk0: error -84 transferring data, sector 36853392, nr 8, cmd response 0x0, card status 0x0
  [ 2666.950736] mmcblk0: retrying using single block read

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-45-generic 3.13.0-45.74
  ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
  Uname: Linux 3.13.0-45-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  sander     1876 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Feb  2 21:41:26 2015
  HibernationDevice: RESUME=UUID=1cce7297-b185-4592-a4a0-dfdc069ad5a1
  InstallationDate: Installed on 2015-02-01 (1 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 0bda:b001 Realtek Semiconductor Corp. 
   Bus 001 Device 003: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
   Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Stream Notebook PC 13
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-45-generic.efi.signed root=UUID=dba934e0-c15e-419b-a02a-96c8add96cf2 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-45-generic N/A
   linux-backports-modules-3.13.0-45-generic  N/A
   linux-firmware                             1.127.11
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/28/2014
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.05
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 802A
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 56.10
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.05:bd11/28/2014:svnHewlett-Packard:pnHPStreamNotebookPC13:pvrType1-ProductConfigId:rvnHewlett-Packard:rn802A:rvr56.10:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Stream Notebook PC 13
  dmi.product.version: Type1 - ProductConfigId
  dmi.sys.vendor: Hewlett-Packard

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