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------------------------------------------------------------------------
On 2011-12-22T03:41:38+00:00 Ralf wrote:

Description of problem:

Since having upgraded to F16 from F14, I am drowning in messages similar
to the one below on the console (corrupting any console output)

[ 1400.353433] sd 4:0:0:0: [sdb] Asking for cache data failed
[ 1400.356601] sd 4:0:0:0: [sdb] Assuming drive cache: write through

accompanied by a message similar to the one in /var/log/messages
(gradually filling it up)

[ 1400.351374] sd 4:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 1400.353433] sd 4:0:0:0: [sdb] Asking for cache data failed
[ 1400.356601] sd 4:0:0:0: [sdb] Assuming drive cache: write through 


This machine (a netbook) only has one hard disk. sdb seems to refer to the 
builtin usb card reader.

Version-Release number of selected component (if applicable):
kernel-PAE-3.1.5-6.fc16.i686

How reproducible:
100%


Expected results:
The kernel not to raise these warnings/errors, but to work flawlessly (Older 
kernels did).

I am inclined to believe the kernel is not handling this sdb device
properly.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/0

------------------------------------------------------------------------
On 2011-12-22T04:02:41+00:00 Dave wrote:

please attach the dmesg output from a fresh boot.
need to see exactly which device we're working with here.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/1

------------------------------------------------------------------------
On 2011-12-22T04:21:51+00:00 Ralf wrote:

Created attachment 549125
dmesg of the system exposing this issue

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/2

------------------------------------------------------------------------
On 2011-12-22T16:07:24+00:00 Dave wrote:

reported to upstream maintainer. thanks.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/3

------------------------------------------------------------------------
On 2011-12-22T17:27:01+00:00 Ralf wrote:

(In reply to comment #3)
> reported to upstream maintainer. thanks.
Welcome.

Any upstream BZ/PR? Any patch proposals, workarounds to try?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/4

------------------------------------------------------------------------
On 2011-12-27T21:04:55+00:00 Joe wrote:

I've been getting the same messages during boot on my laptop ever since
"upgrading" from F14 to F16 and the boot process hangs right there.  The
only way I can use my laptop is to boot with the last 2.X kernel from
F14, which works fine.  No matter what 3.X kernel I try, this happens.
My laptop only has one internal HDD, and I never have a CD or flash
drive mounted during boot if that helps.  If there's a way for me to get
some data about a failed boot, please let me know and I'll do what's
needed.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/5

------------------------------------------------------------------------
On 2012-01-30T22:52:38+00:00 Joe wrote:

More info.  Ever since the "upgrade," the CD/DVD on my laptop has been
unusable.  If I into a 3.x kernel with it empty, I get the endless [sdb]
errors and putting a known-good CD in the drive first doesn't change
anything.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/6

------------------------------------------------------------------------
On 2012-02-28T14:57:21+00:00 Mark wrote:

I'm seeing this also on a laptop with builtin card reader. Every 50
seconds or so:

kernel: [  312.932881] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
kernel: [  312.935878] sd 6:0:0:0: [sdb] Asking for cache data failed
kernel: [  312.935888] sd 6:0:0:0: [sdb] Assuming drive cache: write through

But if I remove the plastic fake SD card which fits in the slot to
prevent dust, etc:

kernel: [  317.199029] usb 2-1.6: USB disconnect, device number 4

Then the kernel messages stop. On reinsertion of the fake card:

kernel: [  556.312591] usb 2-1.6: New USB device found, idVendor=0bda, 
idProduct=0138
kernel: [  556.312601] usb 2-1.6: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
kernel: [  556.312608] usb 2-1.6: Product: USB2.0-CRW
kernel: [  556.312612] usb 2-1.6: Manufacturer: Generic
kernel: [  556.312616] usb 2-1.6: SerialNumber: 20090516388200000
kernel: [  556.494090] scsi7 : usb-storage 2-1.6:1.0
mtp-probe: checking bus 2, device 5: 
"/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6"
mtp-probe: bus: 2, device: 5 was not an MTP device
kernel: [  557.517025] scsi 7:0:0:0: Direct-Access     Generic- Multi-Card      
 1.00 PQ: 0 ANSI: 0 CCS
kernel: [  557.519450] sd 7:0:0:0: Attached scsi generic sg2 type 0
kernel: [  564.710556] sd 7:0:0:0: [sdb] Attached SCSI removable disk
kernel: [  608.214558] sd 7:0:0:0: [sdb] Test WP failed, assume Write Enabled
kernel: [  608.217681] sd 7:0:0:0: [sdb] Asking for cache data failed
kernel: [  608.217691] sd 7:0:0:0: [sdb] Assuming drive cache: write through

and so on...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/25

------------------------------------------------------------------------
On 2012-02-29T19:05:16+00:00 Pete wrote:

So, what component does poke sdb? I have the same problem on a small server
with a built-in SD reader. I killed smartd and cupsd (with colord). Only
systemd, udev, and networking servers remai.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/26

------------------------------------------------------------------------
On 2012-03-23T03:27:24+00:00 Samuel wrote:

Has any found a workaround for this. I am on fedora 16 and have the
latest updates and i get this message. It does not boot to the graphical
interface but continues to give me this error.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/72

------------------------------------------------------------------------
On 2012-03-24T10:22:52+00:00 Petr wrote:

This problem appeared on my Gentoo after I upgraded udev (to version
182) and enabled DEVTMPFS in kernel (3.2.11) because this udev has
started to require it. Since this change I get these three messages in
kernel log each 52 seconds. The block device is USB memory card reader
(0bda:0158 Realtek Semiconductor Corp. USB 2.0 multicard reader) without
a medium.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/73

------------------------------------------------------------------------
On 2012-03-24T10:48:55+00:00 Petr wrote:

The kernel messages correlate with following kernel/udev events:

KERNEL[684.511147] change   
/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
 (block)
ACTION=change
DEVNAME=/dev/sdb
DEVPATH=/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
DEVTYPE=disk
DISK_MEDIA_CHANGE=1
MAJOR=8
MINOR=16
SEQNUM=725
SUBSYSTEM=block

UDEV  [684.602048] change   
/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
 (block)
ACTION=change
DEVLINKS=/dev/disk/by-id/usb-Generic-_Multi-Card_20071114173400000-0:0 
/dev/disk/by-path/pci-0000:00:0e.5-usb-0:1:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdb
DEVPATH=/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
DEVTYPE=disk
DISK_MEDIA_CHANGE=1
ID_BUS=usb
ID_INSTANCE=0:0
ID_MODEL=Multi-Card
ID_MODEL_ENC=Multi-Card\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0158
ID_PATH=pci-0000:00:0e.5-usb-0:1:1.0-scsi-0:0:0:0
ID_PATH_TAG=pci-0000_00_0e_5-usb-0_1_1_0-scsi-0_0_0_0
ID_REVISION=1.00
ID_SERIAL=Generic-_Multi-Card_20071114173400000-0:0
ID_SERIAL_SHORT=20071114173400000
ID_TYPE=disk
ID_USB_DRIVER=ums-realtek
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Generic-
ID_VENDOR_ENC=Generic-
ID_VENDOR_ID=0bda
MAJOR=8   
MINOR=16  
SEQNUM=725
SUBSYSTEM=block
USEC_INITIALIZED=10909217

KERNEL[687.073016] change   
/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
 (block)
ACTION=change
DEVNAME=/dev/sdb
DEVPATH=/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
DEVTYPE=disk
DISK_MEDIA_CHANGE=1
MAJOR=8   
MINOR=16  
SEQNUM=726
SUBSYSTEM=block

UDEV  [687.089178] change   
/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
 (block)
ACTION=change
DEVLINKS=/dev/disk/by-id/usb-Generic-_Multi-Card_20071114173400000-0:0 
/dev/disk/by-path/pci-0000:00:0e.5-usb-0:1:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdb
DEVPATH=/devices/pci0000:00/0000:00:0e.5/usb4/4-1/4-1:1.0/host2/target2:0:0/2:0:0:0/block/sdb
DEVTYPE=disk
DISK_MEDIA_CHANGE=1
ID_BUS=usb
ID_INSTANCE=0:0
ID_MODEL=Multi-Card
ID_MODEL_ENC=Multi-Card\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0158
ID_PATH=pci-0000:00:0e.5-usb-0:1:1.0-scsi-0:0:0:0
ID_PATH_TAG=pci-0000_00_0e_5-usb-0_1_1_0-scsi-0_0_0_0
ID_REVISION=1.00
ID_SERIAL=Generic-_Multi-Card_20071114173400000-0:0
ID_SERIAL_SHORT=20071114173400000
ID_TYPE=disk
ID_USB_DRIVER=ums-realtek
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Generic-
ID_VENDOR_ENC=Generic-
ID_VENDOR_ID=0bda
MAJOR=8   
MINOR=16  
SEQNUM=726
SUBSYSTEM=block
USEC_INITIALIZED=10909217

Both media-change events generated by kernel appears during one cycle.

Once I need to use the reader, I found kernel does not signal insertion
of a medium, I had to manually rescan partion table with blockdev
--rereadpt. These spurious periodic media events could be a work-around
implemented in kernel for the special hardware.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/74

------------------------------------------------------------------------
On 2012-05-04T22:14:55+00:00 Christian wrote:

FWIW, https://bugzilla.kernel.org/show_bug.cgi?id=43191 seems to be the
upstream bug.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/76

------------------------------------------------------------------------
On 2012-05-04T23:31:59+00:00 Joe wrote:

I tried to boot my laptop into a 3.X kernel with a card in the reader.
It got as far as recreating volatile files and directories, sat there
for about ten minutes or so and rebooted.  I then tried booting it (with
the card still in place) into my trusty old 2.X kernel and It Just
Worked.  I can't speak for anybody else, but having a card in the reader
not only doesn't work around the problem, it causes more problems
earlier in the boot process.  And, I'll admit, the idea of having to
keep a memory card in the slot just to get your computer to boot would
Just Be Wrong.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/77

------------------------------------------------------------------------
On 2012-05-27T14:55:48+00:00 Antonio wrote:

Same issue in Fedora 17; these messages, regarding USB card reader,
appear with and without card. The only way to stop them is remove usb
modules:

# modprobe -r ums_realtek

ums_realtek and usb-storage are interdependent.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/81

------------------------------------------------------------------------
On 2012-09-10T22:20:17+00:00 Joe wrote:

I just tried booting my laptop with a F17 Live USB key.  It worked, just
fine, TYVM.  Clearly, there's some interaction between the 3.X kernels
and somethng else I have installed.  Looks like the best way to fix this
is back up anything I want to keep from my laptop (Not much, because
it's not my main machine.) and do a complete nuke/pave/reinstall from
scratch with F17.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/84

------------------------------------------------------------------------
On 2013-04-03T15:38:21+00:00 Fedora wrote:

This bug appears to have been reported against 'rawhide' during the Fedora 19 
development cycle.
Changing version to '19'.

(As we did not run this process for some time, it could affect also pre-Fedora 
19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 
End Of Life. Thank you.)

More information and reason for this action is here:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/93

------------------------------------------------------------------------
On 2013-04-05T19:39:00+00:00 Justin wrote:

Is this still an issue with the 3.9 kernels in F19?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/94

------------------------------------------------------------------------
On 2013-04-06T03:12:46+00:00 Ralf wrote:

(In reply to comment #17)
> Is this still an issue with the 3.9 kernels in F19?

Yes, this bug is still present in both F18 (Real install on HD) 
and F19 (LiveInstall on USB-stick).

With F19, there is one visible change. The "Test WP" message is gone.

The log messages now look like this:
[ 479.347586] sd 5:0:0:0: [sdb] Asking for cache data failed
[ 479.347992] sd 5:0:0:0: [sdb] Assuming drive cache: write through

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/95

------------------------------------------------------------------------
On 2013-04-06T03:28:13+00:00 Ralf wrote:

Forgot to mention the kernel versions being involved:
F19: kernel-3.9.0-0.rc4.git0.1.fc19.i686
F18: kernel-PAE-3.8.5-201.fc18.i686

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/96

------------------------------------------------------------------------
On 2013-09-18T20:39:00+00:00 Josh wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 19 kernel bugs.

Fedora 19 has now been rebased to 3.11.1-200.fc19.  Please test this
kernel update and let us know if you issue has been resolved or if it is
still present with the newer kernel.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/99

------------------------------------------------------------------------
On 2013-09-19T03:09:55+00:00 Ralf wrote:

(In reply to Josh Boyer from comment #20)
> Fedora 19 has now been rebased to 3.11.1-200.fc19.
Bug as described in comment#0 is still present with 3.11.1-200.fc19.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/100

------------------------------------------------------------------------
On 2014-01-03T22:12:18+00:00 Justin wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 19 kernel bugs.

Fedora 19 has now been rebased to 3.12.6-200.fc19.  Please test this
kernel update (or newer) and let us know if you issue has been resolved
or if it is still present with the newer kernel.

If you have moved on to Fedora 20, and are still experiencing this
issue, please change the version to Fedora 20.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/101

------------------------------------------------------------------------
On 2014-01-03T23:00:22+00:00 Joe wrote:

My laptop is running Fedora 20, and I just updated the kernel to
3.12.6-300.fc20.i686+PAE.  Checking, /var/log/messages still contains a
number of complaints about the cache data on [sdb] even though I only
have one hard drive and there is no flash drive, CD/DVD or memory card
inserted, although it doesn't prevent me from booting.

I may be simply blinder than normal, but I don't see where I can change
the version from 19 to 20, so I'd appreciate it if somebody else does
this for me.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/102

------------------------------------------------------------------------
On 2014-01-04T04:32:50+00:00 Ralf wrote:

(In reply to Joe Zeff from comment #23)
Bug is still present for me with both f19 and f20 (multiboot config).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/103

------------------------------------------------------------------------
On 2014-02-24T14:05:03+00:00 Justin wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.13.4-200.fc20.  Please test this
kernel update and let us know if you issue has been resolved or if it is
still present with the newer kernel.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/104

------------------------------------------------------------------------
On 2014-02-24T15:40:24+00:00 Ralf wrote:

(In reply to Justin M. Forbes from comment #25)
> *********** MASS BUG UPDATE **************

> Fedora 20 has now been rebased to 3.13.4-200.fc20.  Please test this kernel
> update and let us know if you issue has been resolved or if it is still
> present with the newer kernel.

No improvement with kernel-PAE-3.13.3-201.fc20.i686. Same issue as in
2011.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/105

------------------------------------------------------------------------
On 2014-05-21T19:41:09+00:00 Justin wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.14.4-200.fc20.  Please test this
kernel update (or newer) and let us know if you issue has been resolved
or if it is still present with the newer kernel.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/108

------------------------------------------------------------------------
On 2014-05-22T00:19:15+00:00 Ralf wrote:

(In reply to Justin M. Forbes from comment #27)
> *********** MASS BUG UPDATE **************

> Fedora 20 has now been rebased to 3.14.4-200.fc20.  Please test this kernel
> update (or newer) and let us know if you issue has been resolved or if it is
> still present with the newer kernel.

No improvement with kernel-PAE-3.14.4-200.fc20.i686. Same issue as in
2011.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/109

------------------------------------------------------------------------
On 2014-05-22T08:02:54+00:00 Ralf wrote:

Yeah! Petr, I own you a beer!

In my case, this definitely is Linux Kernel 43191.

Googling around for this bug has led me to find passing "ss_en=0" to 
the ums_realtek kernel module
works-around (fixes ?) this issue.

E.g. Add a file
/etc/modprobe.d/ums-realtek.conf
with this contents:
options ums_realtek ss_en=0

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/110

------------------------------------------------------------------------
On 2014-08-27T15:34:46+00:00 John wrote:

(In reply to Ralf Corsepius from comment #29)
> Yeah! Petr, I own you a beer!
> 
> In my case, this definitely is Linux Kernel 43191.
> 
> Googling around for this bug has led me to find passing "ss_en=0" to 
> the ums_realtek kernel module
> works-around (fixes ?) this issue.
> 
> E.g. Add a file
> /etc/modprobe.d/ums-realtek.conf
> with this contents:
> options ums_realtek ss_en=0


Ralph, thanks for the excellent comment.  Any news on the success (or not) of 
using ss_en=0?

Anybody, if I see these messages and am without ss_en=0, does this just
result in log noise or does it cause ill behavior besides?

I'm getting these messages, but on stateless deployments that boot from
a SD card so I can't really test without a respin.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/114

------------------------------------------------------------------------
On 2014-08-27T16:37:10+00:00 Ralf wrote:

(In reply to John Florian from comment #30)

> Ralph, thanks for the excellent comment.  Any news on the success (or not)
> of using ss_en=0?
AFAICT, in recent kernels (Don't know since when; I am on Fedora 20), 
ss_en=0 is not required anymore.

> Anybody, if I see these messages and am without ss_en=0, does this just
> result in log noise or does it cause ill behavior besides?
The log noise isn't "that harmless". It had caused /var/log/messages rsp. 
journals to grow beyond reasons and caused different kinds of hick-ups on slow, 
small RAM systems (I am suspecting it to be co-responsible for hard machine 
lock ups, I once was facing with journalctl).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/115

------------------------------------------------------------------------
On 2014-08-27T17:44:15+00:00 John wrote:

(In reply to Ralf Corsepius from comment #31)
> (In reply to John Florian from comment #30)
> 
> > Ralph, thanks for the excellent comment.  Any news on the success (or not)
> > of using ss_en=0?
> AFAICT, in recent kernels (Don't know since when; I am on Fedora 20), 
> ss_en=0 is not required anymore.

Good to know.  I see the problem on my F18-based spins but not on the F20-based 
one nearing deployment.  These two specific cases (18=bad/20=good) are both on 
Asus EeeBox B202 hardware, but there are many production variants of this 
"model" (grrrrr).  Knowing you haven't seen on F20 is very helpful.
 
> > Anybody, if I see these messages and am without ss_en=0, does this just
> > result in log noise or does it cause ill behavior besides?
> The log noise isn't "that harmless". It had caused /var/log/messages rsp.
> journals to grow beyond reasons and caused different kinds of hick-ups on
> slow, small RAM systems (I am suspecting it to be co-responsible for hard
> machine lock ups, I once was facing with journalctl).

Hmmm... that worries me.  My B202 deployments have been mostly good but
more likely than other models to exhibit troublesome behavior.  I should
have systemd-journald conf'd where log growth isn't an issue, but ...

I actually might be able to aid my F18-based deployments after all,
despite what logic and reason would have my presume.  I was able to
rmmod usb_realtek, make the config you offered and modprobe it back in.
I had been seeing the noise about every 50s and it's now been quiet for
5m.  How I was able to make the change, I don't understand.  The config
file only hit tmpfs (because of the statelessness), but the tools I
needed to do so once rmmod'd would have had to come off SD ... or from
caching of the Live squashfs.img.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/116

------------------------------------------------------------------------
On 2014-11-13T16:04:24+00:00 Justin wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.17.2-200.fc20.  Please test this
kernel update (or newer) and let us know if you issue has been resolved
or if it is still present with the newer kernel.

If you have moved on to Fedora 21, and are still experiencing this
issue, please change the version to Fedora 21.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/117

------------------------------------------------------------------------
On 2014-11-14T23:26:23+00:00 Christian wrote:

After "modprobe ums_realtek" (w/o any options) the following gets
printed, but the repeating messages are gone with 3.17.2-200.fc20.i686:

 kernel: [162938.337569] ums-realtek 1-5:1.0: USB Mass Storage device detected
 kernel: [162938.347415] scsi host4: usb-storage 1-5:1.0
 kernel: [162938.352902] usbcore: registered new interface driver ums-realtek
 kernel: ums-realtek 1-5:1.0: USB Mass Storage device detected
 kernel: scsi host4: usb-storage 1-5:1.0
 kernel: usbcore: registered new interface driver ums-realtek
 kernel: [162939.357790] scsi 4:0:0:0: Direct-Access     Generic- Multi-Card    
   1.00 PQ: 0 ANSI: 0 CCS
 kernel: scsi 4:0:0:0: Direct-Access     Generic- Multi-Card       1.00 PQ: 0 
ANSI: 0 CCS
 kernel: [162939.367789] sd 4:0:0:0: Attached scsi generic sg1 type 0
 kernel: [162939.377269] sd 4:0:0:0: [sdb] Attached SCSI removable disk
 kernel: sd 4:0:0:0: Attached scsi generic sg1 type 0
 kernel: sd 4:0:0:0: [sdb] Attached SCSI removable disk

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/118

------------------------------------------------------------------------
On 2015-02-24T16:25:07+00:00 Fedora wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.18.7-100.fc20.  Please test this
kernel update (or newer) and let us know if you issue has been resolved
or if it is still present with the newer kernel.

If you have moved on to Fedora 21, and are still experiencing this
issue, please change the version to Fedora 21.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/121

------------------------------------------------------------------------
On 2015-03-22T18:45:57+00:00 Ralf wrote:

I think this bug is back in "new clothes":
...
Mar 22 19:42:14 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
Mar 22 19:42:14 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
Mar 22 19:42:14 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
Mar 22 19:41:23 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
Mar 22 19:41:23 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
Mar 22 19:41:23 gunvald1 systemd-udevd[488]: error: /dev/sdb: No medium found
...

Same HW as before, same symptoms, different error messages.

The internet is full of people complaining about it and of kernel-
maintainers and systemd maintainer mutually denying responsibility.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/122

------------------------------------------------------------------------
On 2015-04-28T18:31:39+00:00 Fedora wrote:

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to
go through and several of them have gone stale.  Due to this, we are
doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.19.5-100.fc20.  Please test this
kernel update (or newer) and let us know if you issue has been resolved
or if it is still present with the newer kernel.

If you have moved on to Fedora 21, and are still experiencing this
issue, please change the version to Fedora 21.

If you experience different issues, please open a new bug report for
those.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/123

------------------------------------------------------------------------
On 2015-04-28T20:23:41+00:00 Joe wrote:

My laptop is no longer doing this.  I do, however get several kerneloops
at boot that can't be reported because the kernel is tainted.
(Flags:GW)  Checking, /proc/sys/kernel/tainted reports 0.  I don't know
what this means, except that the earlier bug is no longer active.  I'm
using F 20 right now, soon to upgrade to 21.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/124

------------------------------------------------------------------------
On 2015-05-29T08:41:57+00:00 Fedora wrote:

This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '20'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 20 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/125

------------------------------------------------------------------------
On 2015-06-29T11:37:40+00:00 Fedora wrote:

Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/126

------------------------------------------------------------------------
On 2015-07-29T18:10:36+00:00 Christian wrote:

As Ralf Corsepius already mentioned, this is still happening in Fedora
21, although with a new error message:

len# modprobe ums-realtek
Jul 29 11:06:01 len kernel: ums-realtek 1-5:1.0: USB Mass Storage device 
detected
Jul 29 11:06:01 len kernel: scsi host4: usb-storage 1-5:1.0
Jul 29 11:06:01 len kernel: usbcore: registered new interface driver ums-realtek
Jul 29 11:06:02 len kernel: scsi 4:0:0:0: Direct-Access     Generic- Multi-Card 
      1.00 PQ: 0 ANSI: 0 CCS
Jul 29 11:06:02 len kernel: sd 4:0:0:0: [sdb] Attached SCSI removable disk
Jul 29 11:06:02 len kernel: sd 4:0:0:0: Attached scsi generic sg1 type 0
Jul 29 11:06:02 len systemd-udevd[251]: error: /dev/sdb: No medium found
Jul 29 11:06:03 len systemd-udevd[251]: error: /dev/sdb: No medium found

=== And then, every 50 seconds:

Jul 29 11:06:52 len systemd-udevd[251]: error: /dev/sdb: No medium found
Jul 29 11:06:53 len systemd-udevd[251]: error: /dev/sdb: No medium found
Jul 29 11:06:53 len systemd-udevd[251]: error: /dev/sdb: No medium found

Jul 29 11:07:44 len systemd-udevd[251]: error: /dev/sdb: No medium found
Jul 29 11:07:44 len systemd-udevd[251]: error: /dev/sdb: No medium found
Jul 29 11:07:44 len systemd-udevd[251]: error: /dev/sdb: No medium found

Unloading (and blacklisting) ums_realtek make the error go away.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/127

------------------------------------------------------------------------
On 2015-07-30T04:09:45+00:00 Ralf wrote:

Reopening.

It also happens with f22:
...
Jul 30 06:06:55 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:06:55 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:06:55 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:06:03 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:06:03 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:06:03 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:05:12 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found
Jul 30 06:05:12 gunvald1 systemd-udevd[524]: error: /dev/sdb: No medium found

# uname -a
Linux gunvald1 4.1.2-200.fc22.i686+PAE #1 SMP Wed Jul 15 20:30:12 UTC 2015 i686 
i686 i386 GNU/Linux

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/128

------------------------------------------------------------------------
On 2015-11-04T15:25:15+00:00 Fedora wrote:

This message is a reminder that Fedora 21 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 21. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '21'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 21 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/129

------------------------------------------------------------------------
On 2015-12-02T02:36:40+00:00 Fedora wrote:

Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/130

------------------------------------------------------------------------
On 2015-12-02T19:29:21+00:00 Christian wrote:

I can't reproduce this with F23 any more:

$ uname -r
4.2.6-300.fc23.i686+PAE

$ modprobe ums-realtek 
$ dmesg
[...]
[919349.437171] ums-realtek 1-5:1.0: USB Mass Storage device detected
[919349.467214] scsi host6: usb-storage 1-5:1.0
[919349.469002] usbcore: registered new interface driver ums-realtek
[919350.470825] scsi 6:0:0:0: Direct-Access     Generic- Multi-Card       1.00 
PQ: 0 ANSI: 0 CCS
[919350.477418] sd 6:0:0:0: Attached scsi generic sg1 type 0
[919350.486544] sd 6:0:0:0: [sdb] Attached SCSI removable disk

=> No more (periodic) error messages, great!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760/comments/131


** Changed in: linux (Fedora)
       Status: Unknown => Won't Fix

** Changed in: linux (Fedora)
   Importance: Unknown => Undecided

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Title:
  Constant warnings from the kernel: Test WP failed, assume Write
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