[beagleboard] Editing uEnv.txt to disable HDMI causes BBB to stick in uBoot and I have to re-install sys.
Everyone says you can edit uEnv.txt while connected to the USB, which is true. But!!! When I reboot the systems fails and is stuck in uBoot. All I want to do is disable the HDMI, uncommenting the line in uEnv.txt isn't working for me. Any suggestions? -- 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. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Editing uEnv.txt
On Fri, Nov 1, 2013 at 12:03 PM, Jacob Stockton jacob.d.stock...@gmail.com wrote: Hello all, I have been out of the BBB world for a few months, but after loading RCN's new beaglebone black Ubuntu distro (10/8) I am having difficulties modifying the uEnv.txt file. I can easily open the file in nano, edit the file and save the file, but when I reboot to activate the device tree changes (turning off HDMI, adding UARTs, etc.) none of the changes I made are reflected in the uEnv.txt file. Has the method to load/unload device trees changed? Verify those changes are actually being enabled.. cat /proc/cmdline Regards, -- Robert Nelson http://www.rcn-ee.com/ -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Editing uEnv.txt
On Fri, 1 Nov 2013, Robert Nelson wrote: On Fri, Nov 1, 2013 at 12:03 PM, Jacob Stockton jacob.d.stock...@gmail.com wrote: Hello all, I have been out of the BBB world for a few months, but after loading RCN's new beaglebone black Ubuntu distro (10/8) I am having difficulties modifying the uEnv.txt file. I can easily open the file in nano, edit the file and save the file, but when I reboot to activate the device tree changes (turning off HDMI, adding UARTs, etc.) none of the changes I made are reflected in the uEnv.txt file. Has the method to load/unload device trees changed? Verify those changes are actually being enabled.. cat /proc/cmdline *which* uEnv.txt file are you editing? confusingly, some distros put a uEnv.txt file in /boot, which is utterly meaningless since the one used by u-boot is in the FAT partition. rday -- Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Editing uEnv.txt
I am editing the uEnv.txt file found in /boot/uboot/. On Friday, November 1, 2013 12:15:41 PM UTC-5, Robert P. J. Day wrote: On Fri, 1 Nov 2013, Robert Nelson wrote: On Fri, Nov 1, 2013 at 12:03 PM, Jacob Stockton jacob.d@gmail.com javascript: wrote: Hello all, I have been out of the BBB world for a few months, but after loading RCN's new beaglebone black Ubuntu distro (10/8) I am having difficulties modifying the uEnv.txt file. I can easily open the file in nano, edit the file and save the file, but when I reboot to activate the device tree changes (turning off HDMI, adding UARTs, etc.) none of the changes I made are reflected in the uEnv.txt file. Has the method to load/unload device trees changed? Verify those changes are actually being enabled.. cat /proc/cmdline *which* uEnv.txt file are you editing? confusingly, some distros put a uEnv.txt file in /boot, which is utterly meaningless since the one used by u-boot is in the FAT partition. rday -- Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Editing uEnv.txt
On Fri, 1 Nov 2013, Jacob Stockton wrote: Robert, I am not sure what that file that your referring to is, but this is the output of the cat command: ubuntu@arm:/boot/uboot$ cat /proc/cmdline console=ttyO0,115200n8 root=UUID=bdf02b76-8d35-4aa7-9cae-bae8e9805f03 ro rootfstype=ext4 rootwait fixrtc ip= Doesn't seem very informative, but maybe that's because I am not using it right? what i meant was i've seen the situation where there is a uEnv.txt file under either /boot or /boot/uboot which *misleads* people into thinking that's the one that should be edited, leading to massive confusion since that file is (in some cases) utterly worthless. in some cases, there is another uEnv.txt file in the *FAT* partition, and that's the one u-boot is actually reading. you need to check your u-boot environment to verify which one u-boot is consulting. rday -- Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday -- 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. For more options, visit https://groups.google.com/groups/opt_out.
