Bug 43101

Summary:	SD Card Reader Incomplete/Corrupt Files / Scrambled Data etc
Product:	Drivers	Reporter:	braaart
Component:	MMC/SD	Assignee:	drivers_mmc-sd
Status:	NEW ---
Severity:	normal	CC:	alan, braaart, chris, szg00000
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.35-3.9+	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	screenshot showing behaviour screenshot showing behaviour

Description braaart 2012-04-13 13:52:44 UTC

Created attachment 72908 [details]
screenshot showing behaviour

Reported as a bug in Launchpad Bug #875927

HP (6700 Series) Laptop with built-in SD (and multi-) card reader.

SD card reader displays incomplete or corrupted files. Eg, jpgs shown as random coloured thumbnail or random characters. Some files are not displayed at all. Some files are correctly displayed. Also 'Error interpreting JPEG file (Bogus DQT index 15)' and 'Error interpreting JPEG file (JPEG datastream contains no image)'

Lots of additional 'files' are displayed (as random symbols) which don't actually exist.

Opening an affected file (if you can see it) does not work. Different error messages occur - 'could not open file' or 'type not supported' 'could not display' etc. Some correctly displayed files also yield these messages.

The bug has been present since 10.10 (2.6.35) with no change through the subsequent versions. I have tested 12.04 as well as the mainline kernel 3.4.0-030400rc1 http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc1-precise/

I an unable to do a kernel bisect/commit, sorry.

There's quite a lot of info (screenshots, apport-collect, dmesg) in the launchpad report + an earlier report Bug #649912 - please let me know what else would be useful and I'll do my best to attach/simulate/execute it.

Comment 1 braaart 2012-04-13 13:53:38 UTC

Created attachment 72909 [details]
screenshot showing behaviour

Comment 2 braaart 2012-06-27 19:19:39 UTC

hello.. anybody..?

Comment 3 Alan 2012-09-05 16:35:54 UTC

kernel bugzilla is just used to track bug existence for the most part not for getting stuff fixed necessarily. If you want stuff fixed that's something to talk to your distribution about

Moved to MMC/SD

Comment 4 braaart 2012-10-16 13:58:07 UTC

The bug has been listed under various Bug #'s for over 2 years in Ubuntu Launchpad. Eventually it was deemed a 'kernel problem' and I was asked to submit an upstream kernel bug report, hence the reporting here.

Comment 5 braaart 2013-04-19 08:19:48 UTC

The bug persists in mainline kernel v3.9-rc7-raring..

Comment 6 Szőgyényi Gábor 2016-11-09 19:41:38 UTC

Please try this bug with latest kernel image.