Re: USB camera not hotplugging because SYSFS{ID_VENDOR} etc. not

[Moshe Yudkowsky <msha5_17@bl.com>]

Andrey,

Thanks for responding.

Andrey Borzenkov wrote:

>> libgphoto2.rules:
>>> SYSFS{idVendor}="04a9", SYSFS{idProduct}="3051", MODE="0660",
>>> GROUP="camera"
> 
> If this is full rule it won't work.

That's the full rule. I'm pretty sure it used to work.

I wrote:
>>  I don't have SYSFS{ID_VENDOR} available when
>> > the device is plugged in. 

You wrote:

> This does not exist and has never existed.

But I see from udevmonitor --env that:

> ID_VENDOR=iriver
> ID_MODEL=MassStorage_Disc
> ID_REVISION\001
> ID_SERIAL=iriver_MassStorage_Disc
> ID_TYPE=disk
> ID_BUS=usb

And the rule

> SUBSYSTEM="block", ACTION="add", ENV{ID_VENDOR}="iriver", ENV{ID_SERIAL}="iriver_MassStorage_Disc", SYMLINK+="iriver", RUN+="/etc/hotplug/usb/iriver",
> ENV{REMOVE_CMD}="/etc/hotplug/usb/iriver remove"

does work as expected.

Oh, I see. One's ENV and the other is SYSFS. As always, it's impossible 
to tell from the printout if you don't know the SYSFS variables by heart.

And, for the record, I suspect that ID_VENDOR got into the environment 
via a usb_id() function call -- am I correct?

For the camera, I get

> PRODUCTJ9/3051/1 

And inside the rule for the camera I see SYSFS{idVendor}="04a9", 
SYSFS{idProduct}="3051". It looks to me as if they are very similar. 
Has there been a recent change of some sort in udev that made idVendor 
stop working? Or did this never work, and I am remembering wrong, and 
it's time to write ghoto2 and ask them to update their rules?

-- 
  Moshe Yudkowsky
  work: http://www.Disaggregate.com
  book: http://www.PebbleAndAvalanche.com


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