subject:"\[Bug 925760\] Re\: Constant warnings from the kernel\: Test WP failed, assume Write Enabled"

[Bug 925760] Re: Constant warnings from the kernel: Test WP failed, assume Write Enabled

2017-10-27 Thread Bug Watch Updater

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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: 2009051638820
kernel: [  556.494090] scsi7 : usb-storage 2-1.6:1.0
mtp-probe: checking bus 2, device 5: 
"/sys/devices/pci:00/:00:1d.0/usb2/2-1/2-1.6"
mtp-probe: bus: 2, device: 5 was not an MTP device

[Bug 925760] Re: Constant warnings from the kernel: Test WP failed, assume Write Enabled

2014-11-16 Thread Peter Rosenberg

I have the same problem since I had my first Linux Mint 16 and now
turned into Linux Mint 17 (Qiana - 32bit) the problem is still there
(Ubuntu 14.04 i believe). Below, is my workaround which may benefit
others too.

I have experimented a bit with the User Interface, more specifically the
Control Center - Disks (menu in the Mate). There, is a Power Off menu choice of
the Realtek Mass Storage device (ie. by pci builtin Card reader, usually empty).
And voila - the kernel messages stopped ! :-)
It would be nice if one could power down specific ones, by will.
I have found some solutions (not working for me) mostly like tweaking files in
the Drivers settings (/sys/bus/usb/devices path).
These were more or less Linux version dependent, and did not work for me.

Instead, I carried on experimenting, and using the same Control Center - Disks
I found a small button to edit Mount options which opened the dialog as I have
attached a screenshot of.
If I in there specifically said 'Automatic Mount Options' to OFF, then I
permanently seems to avoid the kernel messaged flooding the system log.
So I stay with this workaround, until further.

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