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Ethernet does not work
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Fitting new case
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Advice on PineNote
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curious iPhone user here
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| Recovering root access in Ubuntu |
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Posted by: Scientomancer - 07-26-2017, 01:05 PM - Forum: Ubuntu
- Replies (3)
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Yesterday I had cause to add the ubuntu user to the www-data group. I believe I did this:
Code: # usermod -G www-data ubuntu
Since then, I am unable to become root. If I try to sudo -i, I am told
Code: Sorry, user ubuntu is not allowed to execute '/bin/bash' as root on pine64.
This happens no matter what command I try to run. sudo vim /etc/sudoers?
Code: Sorry, user ubuntu is not allowed to execute '/usr/bin/vim /etc/sudoers' as root on pine64.
I don't actually know if adding ubuntu to a group caused this; it's just the biggest change I've made, and I can't think of anything else I've done that would cause this.
Thanks!
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| Rock64 power consumption |
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Posted by: arevenco - 07-26-2017, 09:29 AM - Forum: General Discussion on ROCK64
- Replies (23)
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First of all, congrats for a very interesting product.
THe board looks very good from a specs. point of view, but what about the power consumption?
How much power does it need in idle and how much power does consume under full load?
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| Strange OpenSSL RSA speed Test issue |
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Posted by: _835_ - 07-26-2017, 05:51 AM - Forum: Debian
- Replies (2)
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Hi guys,
i require your helps and ideas.
i run openssl speed rsa to evaluate the power of my PINE64+ board (i am a crypto guy).
i was a litle bit surprised to see big difference using different distribs :
- the Debian Jessie with Mate DE [3.10.102 BSP 2] by Lenny Raposo show me a nice 9.6 4096bits Private RSA / sec
while other dietPI and armbian get stuck to 6.4 4096bits Private RSA / sec.
So i decide to upgrade both the Debian Jessie Mate and dietPI to the latest kernel 3.10.105, run package update, then i force the CPU setting got from the debian to the dietPI :
sampling_down_factor = 1
sampling_rate = 2000000
sampling_rate_min=40000
up_threshold = 95
but got same result dietPI still show me 6.4 4096bits Private RSA / sec.
What do i miss ?
Any helps appreciate, thanks a lot
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| safe fanout for Digital outputs? |
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Posted by: ealbers - 07-25-2017, 12:45 PM - Forum: General Discussion on PINE A64(+)
- Replies (1)
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How many outputs can a GPIO drive?
I have several ADC's I want to send a clock signal too all at the same time, is there a general rule of tumb of how many devices a pine output can drive at once?
Thanks!
I should mention I'm clocking a dozen or so ADC0832's, they are all reading hall effect sensors
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