[mythtv-users] MCE remote and Mythbuntu

Karl Newman newmank1 at asme.org
Fri Mar 14 20:38:39 UTC 2014

On Fri, Mar 14, 2014 at 10:46 AM, Mike Perkins <mikep at randomtraveller.org.uk
> wrote:

> On 14/03/14 15:46, Karl Newman wrote:
>> I've had various problems with my USB IR receiver/blaster which the
>> manufacturer claims to be a problem with the USB host interface (even
>> though no other device has problems with it...). Their tech support
>> recommended that I use a USB hub in between the receiver and motherboard.
>> The problems were mostly mitigated when I upgraded the motherboard, but I
>> still ran into occasional device lockups which required a reboot to revive
>> (unplug/replug was not enough), but I re-installed the USB hub and it
>> hasn't happened since. Might be something to consider if you're having USB
>> receiver problems.
>>  That sounds to me like a power problem - the manufacturer probably
> thinks that if you use a hub it will have a dedicated power supply rather
> than taking it from the motherboard.
> (This might mean that the device is taking more power than the standard
> allows. They aren't going to admit to that, are they?)
> You might find that a particular set of USB ports or headers on your
> motherboard can supply more power than other ports. Your motherboard manual
> may help you with this. Also, ensure that nothing else is using the
> motherboard port set you connect the receiver to, thus diluting the
> available power.
It's an unpowered hub, so if that were the case it should be making the
problem worse. I think it's probably something with the signaling--levels
or timing or something.

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