ublog

Ubuntu 14.10: freeze on shutdown or reboot fix

Many people have been constantly reporting occasional freezes on shutdown or reboot.

Sometimes this can happen even when simply logging out.

 

I think that the problem is related to Ubuntu’s automatic login system. If you disable the automatic login from the System Settings -> User Accounts, Ubuntu will be able to reboot and shutdown normally. I don’t know if this is the definitive cause of the problem, but after disabling the automatic login I haven’t had this problem anymore.

“Density85” Mini-ITX compact desktop PC

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Components list:

Asrock B85M-ITX Asus H81I-Plus
Intel Core i7 4770
16GB DDR3-1600 Crucial
Sapphire R7 260X 2GB
Cooler Master Elite 110
Thermalright AXP-100
Antec Neo Eco 400W
Kingston V300 120GB
HGST 1TB 2,5′ 7200rpm
Bitfenix Spectre LED @1100rpm

 

Motherboard and cooler orientation

The Thermalright AXP-100 Muscle CPU cooler is mounted without a backplate. 4 screws are screwed in the 4 motherboard holes. You won’t have any issues with components protruding from the back of the motherboard.

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At first I wanted to install the Thermalright AXP-100 Muscle with the pipe-ends to the left, over the IO panel. With this orientation I get excellent clearance on all RAM slots and internal connectors located on the lower part of the motherboard.

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However, the 4-PIN EPS connector is completely covered by the heatsink, and connecting the power cable becomes impossible unless you twist it to dangerous levels.

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With the pipe-ends facing the PCI slot the EPS connector is accessible. Only the fan headers are blocked, but fan cables are much easier to connect in limited space.

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The fan is in pull mode. Because the motherboard is in horizontal position, and hot air travels upwards, having the fan in pull should improve cooling performance.

 

Drives

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I installed a 2,5′ SSD and a 2,5′ hard disk. The process is really easy. Screw them to the plate, which goes on the top side of the case.

 

Finishing installation

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First motherboard, CPU and RAM test out of the case.

 

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Space above the cpu cooler is very limited. A little more than 1cm.

 

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With everything in place the cables are a real mess. There is no space where to hide cables. A modular PSU is highly recommended.

 

 Noise levels

 

Noise levels displayed here are the recorded sound level minus environment background noise. All recordings were made with the CPU fully stressed.

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The comparison computers are:

Gigabyte-A8: AMD A8-5600K – Cooler Master TX3 Evo – Corsair VS350 – Antec case fan 1200rpm

Asus U36 notebook: Intel i7-2640M

Gigabyte-955: AMD Phenom II X4 955 @4Ghz – Cooler Master Hyper 212plus @1000rpm – Cooler Master GX550 – Sapphire HD6850

 

The entire computer isn’t very noisy. The CPU fan profile has been set to Silent in the BIOS, thus running between 950 and 1300rpm instead of 950-2500rpm. With this silent profile the CPU heats up to about 70-75°C with room temperature of 25°C. It doesn’t run really cool, but not too hot either. Considering the very limited space above the fan, the Thermalright is doing an excellent job.

 

The Asrock board died after less than 2 weeks. It has been replaced with an Asus H81I-Plus.

wifi

Fix TP-Link TD-W8960N slow Wireless problem

There is an easy fix to the problem. It seems to be related to wireless channels and frequency settings.

Here’s how to fix it:

1) navigate to http://192.168.1.1/ and login. You should have the username (admin) and password. If not, check the manual and the stickers on the router.

2) Navigate to Wireless –> Advanced

3) Change settings to the following ones:

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(you don’t actually have to set Channel on 11, other values may work just as well depending on the channels being used near your router by other devices)

4) Click on Apply/Save

5) Disconnect and reconnect your Wifi devices.

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Scale interior design

A simple interior design, ‘scale’. Living room with stairs and small balcony.

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Created with Blender.

Rendered with Luxrender.

 

BlendSwap credits:

http://www.blendswap.com/user/blenderess
http://www.blendswap.com/user/nikitron
http://www.blendswap.com/user/RichardEdwards
http://www.blendswap.com/user/Jamlove
http://www.blendswap.com/user/DennisH2010
http://www.blendswap.com/user/Rev%20Soul
http://www.blendswap.com/user/elkid

 

https://plus.google.com/103126395648028513108/posts/Q6jhP1AWpyx