[sane-devel] HP 7450C PowerSave and buttons

Brad Corrion bcorrion@web-co.com
Thu, 27 Jan 2005 18:06:44 -0700


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Rene,

Rene Rebe wrote:

> Hi,
>
> Brad Corrion wrote:
>
>> Recently got my hands on a HP 7450C and have been anxiously 
>> installing and testing sane.  For the most part, everything is doing 
>> fine.  Two issues, however:
>> 1) Can't get the front panel buttons to register.  Tested with 
>> sanebuttons.d from 
>> http://svn.exactcode.de/*sane*-*avision*/trunk/sanebuttonsd/ but no 
>> joy-- the program never recognizes the button presses (using avision 
>> backend from the same website as well).
>
>
> It did work here the last time I tested it. I schedule to retest with 
> the 7450 again in the next days.
>
> Could you provide the log obtained when SANE_DEBUG_AVISION is set to 7 
> when you run the test program?
>
>> 2)  I get the 90 s timeout when trying to scan from warm-up mode.  
>> Once I see one of these:
>
>
> The 7450 is a bit touchy when it returns from power safe mode. A 
> friend I lent my HP 7450 to also reported this. I try to take a look 
> if I can work around s.th. in that area, soon.
>
> Until I have some free minutes (end of next week?) I can only advice 
> to save a bit more power and pull the plug when you do not use the 
> scanner - to work around the firmware wakeup bug ...
>
>> usb 2-1: usbfs: USBDEVFS_BULK failed ep 0x83 len 4096 ret -84
>>
>> in dmesg, then I know I have to power cycle the scanner.
>>
>> Any ideas what's going on?
>
>
> Yours,
>
Thanks for the attention!  I've attached the log file.

Thanks,
Brad

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