Ubuntu Tips

[shodruk]

Ubuntu Tips, Settings, Issues and Solutions, etc.

[shodruk]

The issue:
Serious audio latency

The solution:
Just uninstall PulseAudio
$ sudo apt-get purge pulseaudio

The side effect:
Unable to adjust audio volume from desktop
(use TV volume!)
No sound mixing

[aolofsson]

Thanks! We'll definitely fix this for default image going forward.

[magorian]

Andreas:

I find that the boards are running extremely hot even with the heatsinks on the Zincs (might as well preinstall those): even the edges of the boards and the standoffs are too hot to touch. One built from same image keeps hanging, very possibly from overheating. I can see why you needed 3A supplies! Do any of the environmental packages work reporting temps, and did you end up fan cooling all your prototypes? Thanks.

Dan

[aolofsson]

Dan,
We ran some boards for 24 hours without the need Let's open a new topic under the Parallella board sub forum and I will elaborate in exactly what we ran and measured in terms if power consumption.
Andreas

[ed2k]

it maybe easier to run all your development (editing, gui, compiling, building) directly from parallella board. but for serious development arm cpu with micro sd is slow and fragile comparing to harddisk based x86-64 PC. Especially ubuntu distro is not optimized parallella. so consider using a cross-development platform.

[shodruk]

Are you using Eclipse?

[ed2k]

no I am not trying to run any graphical stuff on the gen1 board. my experience is mostly on the zedboard. I guess the ext file system is not suitable for the sd card.

[over9000]

[shodruk]

* Obsoleted. This tips is only for older kernels.

The issue:
On Parallella16_z7020wGPIO_131220.img(also ~1224.zip), X won't run.

quick fix:
Press Ctrl+Alt+F2 and login.
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak
sudo reboot