Troubleshooting print jobs to the Helios
You tried to print to the Helios and nothing came out. What's wrong?
1. Check the computer's Console Window and the Helios for error messages.
If there are no error messages go to the next step.
2. Is it a network problem?
On the computer open a Unix Shell and type:
/sbin/ping helios
You should start to see lines that say:
PING helios.pet.upenn.edu (170.212.135.10): 56 data bytes
64 bytes from 170.212.135.10: icmp_seq=0 ttl=255 time=4 ms
64 bytes from 170.212.135.10: icmp_seq=1 ttl=255 time=2 ms
64 bytes from 170.212.135.10: icmp_seq=2 ttl=255 time=2 ms
64 bytes from 170.212.135.10: icmp_seq=3 ttl=255 time=2 ms
If the network is up additional lines will print to the screen until you stop the process (see below). If the network is down only two lines will print then nothing else.
To stop this process hold down the Control key and hit the C key.
Summary lines will print out:
----helios.pet.upenn.edu PING Statistics----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max = 2/2/4 ms
If the network is up go to the next step.
3. Kill the active job and see if the rest of the jobs will print.
When a print job runs into problems the Helios keeps trying to print that job so all subsequent jobs are stuck in the queue. The solution is to kill the "active" job. On the computer that you tried to print from, open a Unix Shell and type:
lpstat -t
Many lines will print to the screen. You are interested in the ones that start:
Requests on helios:
Mon Aug 26 11:17:32 1996: Attempting to print dfA190techsupe
Rank Pri Owner Job Files Total Size
active 0 prism 190 (standard input) 1314603 bytes
1st 0 prism 191 (standard input) 1314603 bytes
2nd 0 prism 192 (standard input) 1314603 bytes
Type:
cancel activejob# helios
In this example you would type: cancel 190 helios
The response will look like: "dfA190techsupe dequeued" and the other jobs should immediately begin printing.
cfA190techsupe dequeued
