1187825 - [Aries][Settings] The camera can still be used after you enable the USB Mass Storage.

Status: RESOLVED INVALID

(Firefox OS Graveyard :: Gaia::Settings, defect)

Description

[Annabelle]

Attachment: Bug log:logcat_0152.txt

[1.Description]:
[Aries][v2.5][Settings]The camera can still be used after you enable the USB Mass Storage.

Found time :01:52
See attachment:Arise_2.5.3gp &logcat_0152.txt.

[2.Testing Steps]: 
1.Enable USB Mass Storage（UMS) in Settings and connect with PC .
2.Launch Camera.


[3.Expected Result]: 
2.There is a prompt that memory card in use, unplug device to use the App.

[4.Actual Result]: 
2.You can Launch Camera successfully and use it normally.

[5.Reproduction build]: 

Aries v2.5 :(affected)
Build ID               20150723024716
Gaia Revision          f04fdbfa1943dddeab8ecd1299a76ab56e590d00
Gaia Date              2015-07-22 18:44:09
Gecko Revision         https://hg.mozilla.org/mozilla-central/rev/2ddec2dedced
Gecko Version          42.0a1
Device Name            aries
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.worker.20150723.023231
Firmware Date          Thu Jul 23 02:32:39 UTC 2015
Bootloader             s1

Flame v2.2:(unaffected)
Build ID               20150726002502
Gaia Revision          e1e6317f17a840b19af9dbb25f5a771d8d9fa161
Gaia Date              2015-07-15 21:05:11
Gecko Revision         https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/551aee22a380
Gecko Version          37.0
Device Name            flame
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.cltbld.20150726.041648
Firmware Date          Sun Jul 26 04:16:59 EDT 2015
Firmware Version       v18D v4
Bootloader             L1TC000118D0

Flame master:(unaffected)
Build ID               20150726160205
Gaia Revision          ade1ef5249cfab921e00ed67b30f3d03c2e24b5e
Gaia Date              2015-07-24 11:53:36
Gecko Revision         https://hg.mozilla.org/mozilla-central/rev/d3228c82badd
Gecko Version          42.0a1
Device Name            flame
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.cltbld.20150726.191858
Firmware Date          Sun Jul 26 19:19:10 EDT 2015
Firmware Version       v18D v4
Bootloader             L1TC000118D0

[6.Reproduction Frequency]: 
Always Recurrence,5/5

[7.TCID]: 
2909

Comment 1

[Annabelle]

Attachment: Bug video:Arise_2.5.3gp

Comment 2

[Peter Bylenga [:PBylenga]]

Aries uses MTP as a default which allows access to media apps while sharing with USB.  Perhaps these cases need to be updated for MTP vs UMS

see bug 1171556

NI on component owner to take a look.

Comment 3

[No-Jun Park [:njpark]]

But right now, when I enable USB storage, I don't see the drive appear on my Mac: I see Android transfer tool, which means that MTP is enabled.  And and dhylands explained earlier, Camera can be used when connected while MTP is active.  

Wanted to clarify:
When USB Storage is enabled in Settings, should it enable UMS or MTP?  https://bugzilla.mozilla.org/show_bug.cgi?id=1171556#c14 suggests that we are enabling MTP by design, and if it's true, then we should be able to use Camera when connected to PC.  Then we can close this bug since it's by design.

Comment 4

[Dave Hylands [:dhylands]]

You can control whether it uses MTP or UMS.

If you tap on the left side of the USB Storage item, you'll be presented with a dialog that allows you to choose between UMS or MTP. UMS is the default on flame, and MTP is the default on Aries, but you can use either one on both phones.

I think you should only change between UMS and MTP while USB Storage is disabled (I believe that there is a bug open for that)

Comment 5

[Gerry Chang [:gchang]]

Hi No-Jun, 
Based on above comment, is it by design?

Comment 6

[No-Jun Park [:njpark]]

Yes, according to comment 4, the control should be available in both cases.  The bug dave mentions is about switching between UMS and MTP when USB is enabled.  

So I'll go ahead and close this bug.