I deleted the queues, restarted cups and hpijs, then did the hp-setup. 
Now I am back to the original errors: 
[EMAIL PROTECTED] ~]# tail -f /var/log/messages 
Apr 11 14:55:58 localhost hpiod: unexpected DOT4CreditRequest: cmd=4, hid=1, 
pid=1, maxcredit=8: io/hpiod/dot4.cpp 144 
Apr 11 14:55:58 localhost last message repeated 4 times 
Apr 11 14:55:58 localhost hpiod: no channel for sockid=2: io/hpiod/dot4.cpp 52 
Apr 11 14:56:25 localhost hpijs: WARNING: printmode mismatch with pen, tray, 
etc. 
Apr 11 14:57:13 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 14:57:13 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 14:57:14 localhost python: hp-testpage[23895]: note: If an error 
occured, or the test page failed to print, refer to the HPLIP website 
Apr 11 14:57:14 localhost python: hp-testpage[23895]: note: at: 
http://hplip.sourceforge.net for troubleshooting and support. 
Apr 11 14:58:29 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 14:58:29 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 14:59:46 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 14:59:46 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 15:01:02 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 15:01:02 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 15:02:18 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 15:02:18 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 15:03:34 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 11 15:03:34 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 




Derek Agar 
IT Director 
Mcleod Express 
217-706-5016 
[EMAIL PROTECTED] 

----- Original Message ----- 
From: "Aaron" <[EMAIL PROTECTED]> 
To: "Derek Agar" <[EMAIL PROTECTED]> 
Cc: hplip-help@lists.sourceforge.net 
Sent: Wednesday, April 11, 2007 2:40:17 PM (GMT-0600) America/Chicago 
Subject: Re: [Hplip-help] invalid Dot4CreditRequest from peripheral 

Just for the heck of it can you try removing and reinstalling the printer? 
ie delete the printer queue and set it up again using hp-setup. 

A 


On 4/11/07, Derek Agar < [EMAIL PROTECTED] > wrote: 


Aaron, 
I had the end user switch cables and put it in a different port. (It is at a 
remote location) 
Now I am getting this error when running tail -f /var/log/messages: 
... 
Apr 11 14:33:22 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
Apr 11 14:33:52 localhost hpiod: error submitting URB: No such device 
io/hpiod/usbext.c 48 
Apr 11 14:33:52 localhost hpiod: unable to write Dot4CreditRequest: No such 
device io/hpiod/dot4.cpp 738 
Apr 11 14:33:52 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 932 
Apr 11 14:33:52 localhost hpiod: invalid Device::DeviceID: No such device 
hp:/usb/HP_LaserJet_3055?serial=00CNBJ020495 io/hpiod/device.cpp 771 
Apr 11 14:33:52 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
... 
Of course the Office Jet device still works fine. Is the printer bad? 


Derek Agar 
IT Director 
Mcleod Express 
217-706-5016 
[EMAIL PROTECTED] 


----- Original Message ----- 
From: "Aaron" < [EMAIL PROTECTED] > 
To: "Derek Agar" < [EMAIL PROTECTED] > 
Cc: hplip-help@lists.sourceforge.net 
Sent: Tuesday, April 10, 2007 2:29:08 PM (GMT-0600) America/Chicago 
Subject: Re: [Hplip-help] invalid Dot4CreditRequest from peripheral 

Have you tried a different USB cable? 

also if possible try using a usb 1.1 hub and/or changing the speed of the 
motherboard ports to 1.1. 

And post the results. 

A 


On 4/10/07, Derek Agar < [EMAIL PROTECTED] > wrote: 


The printer is plugged directly into the comptuer. No USB hubs. 

Derek Agar 


----- Original Message ----- 
Subject: Re: [Hplip-help] invalid Dot4CreditRequest from peripheral 

Is the LJ3055 plugged directly into the printer or are you using a usb hub? 

A 


On 4/10/07, Derek Agar < [EMAIL PROTECTED] > wrote: 

Hi, 
I am trying to fix a problem with a HP LaserJet 3055 (MFP). I have Fedora Core 
5 installed, the latest version of cups for fc5 and hplip version of 1.7.3. The 
printer is very flaky about working and not working. I have tried to restart 
the computer and usually stuff starts printing out. 
Anyway, after issueing the command 
tail -f /var/log/messages 
I recieve these errors: 
... 
Apr 10 14:09:26 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 10 14:09:26 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
... 
This is repeated indefinately. 

I am having the user use a HP OfficeJet 6100 (which works fine) until the issue 
is resolved. 
Any ideas? 
Thanks 


Derek Agar 


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