[beagleboard] How can I give higher priority to user-space signal which emits data by usig signal over bbb interru

How can I give higher priority to user-space signal which emits data by usig PySide Signal class over the interrupt which reads value from a sensor when edge is rising of beaglebone black(BBB) gpio. The sensor rate is set to 860, so in every second it reads 860 data, consequently changes the flo

[beagleboard] Beaglebone Black: PySide program giving "cannot connect to X server"

Hi everyone, I did research about this problem in google group but unfortunately was not able to find any answer. I am trying to run simple pyside code on BBB(debian) and getting error "cannot connect to X server". My sample code is import sys from PySide import QtGui app = QtGui.QApplication(s

[beagleboard] BBB: running simple PySide code, but getting error "cannot connect to X Server"

Hi, I am trying to run simple python(PySide) code on BBB(debian) , but getting error "cannot connect to x server" after compilation. My code is import sys from PySide import QtGui app = QtGui.QtApplication(sys.argv) ---> this line giving error "cannot connect to x server" sys.exit(app.exec_())

Re: [beagleboard] Debian kernel 3.8 to 3.14 no ssh via usb

Hello Robert, I am also facing with similar problem as Altaf faced. I run command "update kernel" on my BBB (debian), and now cannot access to BBB through usb cable. I tried to reinstall debian from microSD to BBB but no success. In BBB page it is stated that after flashing the eMMC, all 4 leds

Re: [beagleboard] Debian kernel 3.8 to 3.14 no ssh via usb

Hello, I have solved this problem. I downloaded image file from this link http://elinux.org/Beagleboard:BeagleBoneBlack_Debian and checked it by md5sum command whether it is downloaded successfully. But all images that I downloaded from that link gave me different md5 than expected checksum num

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

Hello Gerald, I faced with the same problem as Glenn "I appear to be getting is that during the initial boot, I get the BeagleBone logo appear in the top left of the screen. This also changes size depending on what resolution I set in uEnv.txt .After this image disappears and a little more time

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

Yes, exactly the same software on both BBB. 2015-03-15 1:11 GMT+00:00 Gerald Coley : > So you have one board that works and another that does not work with the > same exact software? > Gerald > > On Sat, Mar 14, 2015 at 11:43 AM, Upol Ryskulova wrote: > >> Hello Gerald,

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

Hello Gerald & Robert, Actually I am working with three BBB boards, two of them are ok with LCD display I am using. They all have preinstalled linux 3.8.13-bone70. I had checked the link you send me Robert. (I guess it is really exceptional case that BBBs displaying on 1080@60 lcd screen). On on

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

Hello Robert, I have checked my u-boot version. On working two BBB boards u-boot version is U-Boot 2014.04-00015-gb4422bd. On problematic BBB board it is U-Boot 2013.10-00016-ga0e6bc6. Do I need to upgrade my u-boot to the 2014.04-00015 version? Thank you in advance. Regards, Upol -- For more

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

70. On one that has display problem I reinstalled linux 3.8.13-bone41 accidentally and after than I upgraded to bone70. I am not sure If they have exactly same u-boot version. Is it ok, If I update you tomorrow? воскресенье, 15 марта 2015 г., 14:05:10 UTC пользователь Upol Ryskulova написал: &

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

Actually I am working on three BBB boards, and they have preinstalled linux 3.8.13-bone70. Two of them are happy with our LCD screen(I do not why though, yes I had checked the link you send me Robert. I guess really it is exceptional case displaying on 1080@60 [smile] ). On one board I am having

[beagleboard] Re: BBB: running simple PySide code, but getting error "cannot connect to X Server"

Solved this problem. To be able to access X server I just needed to run the code as a normal user not as a root user. So I ssh'ed to beaglebone black as a "debian" user and ran the code. It was simple pyside code without any integration with GPIO's or I2C'es. In case you want to access/modify th

Re: [beagleboard] Re: BeagleBone Black - No HDMI Output

I reinstalled preinstalled image to BBB (debian) . Now it is displaying on LCD screen with 1080@60. Thank you. -- 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 g

[beagleboard] Cannot access to BBB through usb cable after enabling service and reboot

Hello there, I cannot access to my BB (rev C,kernel version 3.8.13-bone71) after creating a new systemd service. I created systemd service that will be invoked after specific usb wifi adapter is plugged into BB. Did changes on udev rules to handle this. Yesterday wireless was little bit stable a

Re: [beagleboard] Unable to Flash the internal eMMC of BBB Rev C

Hello Shyyam, I don't know exact way how to convert to flasher from standalone. But method I followed was download eMMC-flasher image from here . And follow the same steps you did for normal standalo

[beagleboard] Accidentally changed uEnv.txt, cannot access to BBB

Hello, I unconsciously changed uEnv.txt file and uncommented this line #cape_disable=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN,BB-BONE-EMMC-2G. After the reboot I cannot access to BBB. I just want to change that line from uEnv.txt file without flashing eMMC again(I do not want to los

[beagleboard] Re: Accidentally changed uEnv.txt, cannot access to BBB

Sorry for this repeated question. This issue had been discussed in this link <https://groups.google.com/forum/#!searchin/beagleboard/uEnv.txt/beagleboard/l0oh8Amfmbw/j14862fu49wJ> . среда, 25 марта 2015 г., 15:26:47 UTC+2 пользователь Upol Ryskulova написал: > > Hello, > I uncons

[beagleboard] Beaglebone black : Using Systemd service to make wireless stable is not working as expected

Hello, I followed every steps in adafruit setting wifi page to obtain stable wireless on BBB (rev C, kernel version 3.8.13-bone71). And read from google group

Re: [beagleboard] Accidentally changed uEnv.txt, cannot access to BBB

Thank you Robert. Regards, On Wed, Mar 25, 2015 at 3:37 PM, Robert Nelson wrote: > On Wed, Mar 25, 2015 at 8:26 AM, Upol Ryskulova > wrote: > > Hello, > > I unconsciously changed uEnv.txt file and uncommented this line > > > #cape_disable=capemgr.disable_partno=BB-

[beagleboard] Re: Beaglebone black : Using Systemd service to make wireless stable is not working as expected

PS: sorry for mistake. google group link is here . -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the

[beagleboard] Re: Having to manually start Wifi

Hello Graham, I have problem in getting stable wireless connection on BBB. I asked this quiestion

Re: [beagleboard] Re: Having to manually start Wifi

em running, >>> it fails, hangs, and will not respond to later attempts to re-start. >>> >>> If you can find the right dependency for wlan0-service, you might come up >>> with a simpler solution. >>> >>> I gave up looking, and just wait 30 seco

Re: [beagleboard] Re: Beaglebone black : Using Systemd service to make wireless stable is not working as expected

Hello Neabex, thak you for your reply. As far as I know connman is for angstrom distribution, but mine is debian. I was able to overcome this problem by sleep'ng 30sec in the script that service will execute. Dekay currently I am ok with my solution if something goes wrong I will try your approach

[beagleboard] Thermal Printer: printing graph image does not giving clear display

Hello, I have printed graph image using thermal printer using Python-Thermal-Printer library. But graph did not displayed clearly( you should thinken your eye to the image :) ). System I am trying to implement is the real time system which pl

Re: [beagleboard] Re: Beaglebone black : Using Systemd service to make wireless stable is not working as expected

Hello Brian, sorry for not giving full information about BBB, mine is debian wheezy latest stable image (3.8.13-bone70). How can I get stable wireless in this wheezy? For one week wireless was stable but now it is not. hdmi is not disabled. On Tue, Apr 7, 2015 at 5:23 PM, Brian Anderson wrote: >

Re: [beagleboard] Re: Beaglebone black : Using Systemd service to make wireless stable is not working as expected

Now, oddly it got its' static IP address after the boot. When I ping, it hangs there. Also I cannot connect to BBB using its static IP address. I removed all services that enables wireless except service that I created for ifup and ifdown currently available wlan interface. -- For more options

[beagleboard] Re: Python thermal printing library

Hello Lauri, I really need your help. I want to print image with two graphs using thermal printer which is connected to Beaglebone black. I did try with just random graph image from the internet, but resolution is bad, and color of the lines in the graph is grey. It is not clear. I also changed

[beagleboard] Re: Thermal Printer: printing graph image does not giving clear display

Hello again, I want to update my question: using thermal printer to print image containing two graphs (width is 384pixel wide as it is expected from the printer). Adafruit thermal printer link states that thermal printe

[beagleboard] Re: Plotting / Printing..

Hello Zubair, Sorry for opening this old thread. But I have also encountered with the similar problem and really need a guidance. I am plotting two graphs using pyqtgraph, and then want to export the image and do print (using thermal printer to do it). It does not matter for me whether it will d

[beagleboard] No working leases in persistent database - sleeping(cannot connect BeagleboneBlack to wireless)

Yesterday beaglebone black(bbb) was connected to wireless using both router and mobile wireless hotspot. But today interestingly it is not successful to establish wireless connection through router, but can connect via mobile hotspot. What kind of router setting may be causing this? I didn't c

[beagleboard] BBB: Which kernel version of linux 3.8.13-boneXY gives more stable wifi with Tp-Link TL-WN727N

Greetings, I have two questions. 1) We are now working on two BBB one with latest kernel version of v3.8.13-bone74(updated kernel version) and other with v3.8.13-bone47(build in kernel version). To install driver of Tp-Link TL-WN727N on BBB it required the header files of the kernel. I was ab

[beagleboard] CPU usage 100% when apt-get installing some packages

Hello everyone, We are using beaglebone black with 3.8.13-bone74 kernel on it, and using edimax wireless dongle to connect to internet. When we just try to install some packages cpu usage is becoming approximately 100% for most of the times. What may be causing this? Regards, -- For more o

[beagleboard] CPU usage is ~100% on BBB most of the times: is it ok?

Hello there, We are running our web application on chrome browser and CPU usage is ~100%( == 96%) most of the times. Will it be a problem for bbb? Or is it ok? I know that high CPU usage causes heat and probably it will gradually deteriorate electronic components. I am curious maybe 100% cpu

Re: [beagleboard] CPU usage is ~100% on BBB most of the times: is it ok?

browser CPU usage rises to ~100%. And display starts to blink. Could this blink related to CPU usage or network connection? On Mon, Oct 12, 2015 at 10:32 AM, Upol Ryskulova wrote: > Hello there, > > We are running our web application on chrome browser and CPU usage is > ~100%( ==