random infos http://stackoverflow.com/questions/637005/x-server-running
On 4/16/2016 8:35 PM, John Baker wrote: > Really good idea evilwulfie. That, xwindows, sounds like the problem. > > Now I'm thinking that I should put a startup icon on the Debian > desktop to start my program, since I know that I can start it with the > terminal program with sudo python myProgram.py. That has always > worked, whereas I cannot start it via putty which apparently requires > xwindow. It doesn't seem like this should be so hard, but probably > just hard as I am not knowledgeable with Linux. > Thanks for your suggestion, > John > > On 4/16/2016 6:20 PM, evilwulfie wrote: >> I Am saying that if your depending on the GUI for any part of your >> program it may expect the xwindow system to be active before >> it starts, then seeing that the GUI is not running just exits. >> >> It's hard to second guess what your program is doing here but it >> "may" be the issue. >> >> try checking for the xwindow system being running before starting >> your program. >> >> >> >> >> >> On 4/16/2016 6:16 PM, John Baker wrote: >>> Hi Wulf Man, >>> My GUI is part of a simulation program. There's a lot of calculation >>> and the GUI to allow me to enter some parameters and display the >>> results on a graph. You're saying that I have to start up my >>> calculation part of the program and then the GUI? >>> John >>> >>> On Saturday, April 16, 2016 at 5:37:07 PM UTC-7, Wulf Man wrote: >>> >>> If this is a GUI only program you need to start your program >>> after the GUI is up, I don't see this check in your crontab file >>> Been too long since i have done this but i am sure google is >>> your friend >>> >>> >>> >>> On 4/16/2016 4:53 PM, John Baker wrote: >>>> Hi Dieter, >>>> Still not working. I have a hunch that the problem is with >>>> Tkinter but can't tell. I have to run my GUI program SimB.py >>>> with the terminal program on the BBB, typing sudo python >>>> SimB.py, then it runs happily. >>>> >>>> *Here's my crontab in /etc:* >>>> # /etc/crontab: system-wide crontab >>>> # Unlike any other crontab you don't have to run the `crontab' >>>> # command to install the new version when you edit this file >>>> # and files in /etc/cron.d. These files also have username fields, >>>> # that none of the other crontabs do. >>>> >>>> SHELL=/bin/sh >>>> PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin >>>> >>>> # m h dom mon dow usercommand >>>> 17 ** * *root cd / && run-parts --report /etc/cron.hourly >>>> 25 6* * *roottest -x /usr/sbin/anacron || ( cd / && run-parts >>>> --report /etc/cron.daily ) >>>> 47 6* * 7roottest -x /usr/sbin/anacron || ( cd / && run-parts >>>> --report /etc/cron.weekly ) >>>> 52 61 * *roottest -x /usr/sbin/anacron || ( cd / && run-parts >>>> --report /etc/cron.monthly ) >>>> # >>>> @reboot root /usr/bin/python /home/debian/Desktop/SimB.py >>>> * * * * * root /usr/bin/python /home/debian/Desktop/SimB.py >>>> >>>> *and here's from the syslog file that doesn't tell me anything:* >>>> >>>> Apr 16 23:37:01 beaglebone /USR/SBIN/CRON[2293]: (root) CMD >>>> (sudo python /home/debian/Desktop/SimB.py) >>>> >>>> Apr 16 23:37:01 beaglebone /USR/SBIN/CRON[2294]: (debian) CMD >>>> (sudo python /home/debian/Desktop/SimB.py) >>>> >>>> Apr 16 23:37:01 beaglebone /USR/SBIN/CRON[2295]: (root) CMD >>>> (/usr/bin/python /home/debian/Desktop/SimB.py) >>>> >>>> Apr 16 23:37:14 beaglebone /USR/SBIN/CRON[2292]: (CRON) info >>>> (No MTA installed, discarding output) >>>> >>>> Apr 16 23:37:14 beaglebone /USR/SBIN/CRON[2290]: (CRON) info >>>> (No MTA installed, discarding output) >>>> >>>> Apr 16 23:37:14 beaglebone /USR/SBIN/CRON[2291]: (CRON) info >>>> (No MTA installed, discarding output) >>>> >>>> >>>> I can successfully run my program with a keyboard attached to >>>> my BBB using sudo python SimB.py, have to use the sudo, >>>> otherwise gets a Tkinter error. I just now double-checked and >>>> my GUI program SimB.py runs very happily. Cannot run SimB.py >>>> thru putty as it gives the Tkinter error. >>>> >>>> Any ideas? >>>> Thanks, >>>> John >>>> >>>> On Saturday, April 16, 2016 at 1:04:21 AM UTC-7, Dieter Wirz >>>> wrote: >>>> >>>> On Sat, Apr 16, 2016 at 5:57 AM, John Baker >>>> <bakerengi...@gmail.com>wrote: >>>> >>>> John Minton, >>>> I gave crontab a try and of course it didn't work. It >>>> seems like this should be a piece of cake to do. I >>>> probably did something wrong. I checked the syslog and >>>> see an error: "No MTA installed." >>>> >>>> >>>> >>>> If u >>>> >>>> have an error in crontab the crontab tries to send you >>>> an Email... And of coarse cannot without MTA;) >>>> >>>> My crontab file says: >>>> >>>> @reboot sudo python /home/debian/Desktop/myProg.py >>>> * * * * * sudo python /home/debian/Desktop/myProg.py >>>> >>>> >>>> The are two crontabs, users and system crontab. >>>> Users crontab you can change with >>>> $ crontab -e >>>> System crontab with >>>> $ sudo nano /etc/crontab >>>> >>>> If u want to run a process as root, then best is, if u add >>>> >>>> @reboot root /usr/bin/python /home/debian/Desktop/myProg.py >>>> * * * * * root /usr/bin/python >>>> /home/debian/Desktop/myProg.py >>>> >>>> to /etc/crontab >>>> >>>> HTH >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the >>>> Google Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from >>>> it, send an email to beagleboard...@googlegroups.com <javascript:>. >>>> To view this discussion on the web visit >>>> >>>> https://groups.google.com/d/msgid/beagleboard/ad44be62-e803-43e8-b131-131d16fd92f9%40googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout >>>> <https://groups.google.com/d/optout>. >>> >>> >>> >>> <https://www.avast.com/en-us/lp-esg-fav?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=oa-2109-v2-b> >>> Virus-free. www.avast.com >>> >>> <https://www.avast.com/en-us/lp-esg-fav?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=oa-2109-v2-b> >>> >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, >>> send an email to beagleboard+unsubscr...@googlegroups.com >>> <mailto:beagleboard+unsubscr...@googlegroups.com>. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/beagleboard/116fae1e-3ad7-4949-87ee-63a907b32cda%40googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >> >> >> <https://www.avast.com/en-us/lp-esg-fav?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=oa-2109-v2-b> >> Virus-free. www.avast.com >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in >> the Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/ULeYE9kjqZ4/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> beagleboard+unsubscr...@googlegroups.com >> <mailto:beagleboard+unsubscr...@googlegroups.com>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/5712E4F6.4030708%40gmail.com. >> For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to beagleboard+unsubscr...@googlegroups.com > <mailto:beagleboard+unsubscr...@googlegroups.com>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/57130490.2010808%40ieee.org > <https://groups.google.com/d/msgid/beagleboard/57130490.2010808%40ieee.org?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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