Lenovo Ideapad S 205 - webcam is not detected after installing 14.04 (works well on 12.04)

[Andrew]

I've installed 14.04 along with 12.04 on other partition. My webcam is not detected if I perform 14.04 cold boot. And if I perform 12.04 cold boot - the webcam works. And it continues working if I do warm reboot 12.04 to 14.04.

WORKAROUND: Blacklist rts5139.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-43-generic 3.13.0-43.72
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic i686
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: andrew 8868 F.... pulseaudio
 /dev/snd/controlC0: andrew 8868 F.... pulseaudio
CRDA: Error: [Errno 2] Нет такого файла или каталога: 'iw'
CurrentDesktop: LXDE
Date: Mon Dec 29 22:45:38 2014
HibernationDevice: RESUME=UUID=d4d0029d-ccfa-495f-95d7-0ada1c0619ca
InstallationDate: Installed on 2014-12-28 (1 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
MachineType: LENOVO Brazos
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic root=UUID=3f134760-183c-4cc3-a418-ffffa69c58cf ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-43-generic N/A
 linux-backports-modules-3.13.0-43-generic N/A
 linux-firmware 1.127.10
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 4BCN24WW
dmi.board.asset.tag: Base Board Asset Tag Unknown
dmi.board.name: Inagua
dmi.board.vendor: LENOVO
dmi.board.version: 109-B78210-00A
dmi.chassis.asset.tag: Chassis Asset Tag Unknown
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Chassis Version Unknown
dmi.modalias: dmi:bvnLENOVO:bvr4BCN24WW:bd08/10/2011:svnLENOVO:pnBrazos:pvrIdeapadS205:rvnLENOVO:rnInagua:rvr109-B78210-00A:cvnLENOVO:ct10:cvrChassisVersionUnknown:
dmi.product.name: Brazos
dmi.product.version: Ideapad S205
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Andrew, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.19-rc2

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Andrew (coder27)]

Looks like the bug is related on conflict of the modules rts5139 (card reader) and uvcvideo (webcam). After some googling i've blacklisted the rts5139 module and the webcam is being detected fair. Then I've tested the problem with both modules and mainline kernel 3.15.0-031500rc2-generic #201404201435 SMP. There is definitely a problem - when a card is inserted into card reader, doing some operations on it and eject, close/open the laptop (after sleep mode) the either happens: webcam is disappearing or the entire embedded card-reader disappears. Or, like usually, the webcam is missing right on cold boot. Those problems never happen under 12.04 LTS.

[Andrew (coder27)]

BTW both the onboard devices are attached to the same USB bus.

[penalvch (penalvch)]

Andrew, could you please the latest mainline kernel (3.19-rc2) and advise to the results?

[Andrew (coder27)]

Is it safe to install the mainline kernel debs from there: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-rc2-vivid/ (as far as they were built for vivid, not trusty) ?

[Launchpad Janitor (janitor)]

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