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How to get better battery life from your phone

My old phone (as of about three weeks ago) was a windows mobile 6.5 handset and it got about 1 days from its battery. Then I dropped it on to a hard stone floor (is there such a thing as a soft stone floor?) and it started to misbehave. The sound would turn off, including the sound of the person talking to me! No ringtone or any other sound until I rebooted it. Then it was okay for a day or two but then it would not answer calls for two days until I rebooted it again. So I restored it from the custom ROM back to the manufacturers version of Windows mobile and installed Android (as an executable that was run after booting Windows mobile!). Now the battery life was less than a day! So I got a new (Huawei Sonic) phone for less than half what the old phone cost. A very nice, android based, phone. Then I got a $2 prepaid SIM for the old phone. Recharged it, activated the SIM and called the old phone. It answered! Since then it has sat on my desk for 9 days - the battery life is down t...

Upgrading Fedora 14 to 15 and Gnome V3

I have two linux file servers and they were both on fedora 14. I decided to upgrade them to fedora 15 and started using the two online upgrade methods - preupgrade and the Fedora documented way using yum. Both upgrades worked flawlessly but on one of the file servers it failed all the drives in the RAID6 array**. I restored from backup to fedora 14 and the RAID was fine and has stayed fine for a week since. Besides that problem I found the biggest problem with Fedora 15 is Gnome V3. It would only work in fallback mode on one system due to the PCI video card and on the other system it was really bad using VNC - the screen would not refresh - and I had to enable the fallback mode. For a system that is going to be used remotely Gnome 3 is useless - perhaps using X it may be better but with VNC it is hopeless. So I had mixed success with the upgrade - one is working fine on Fedora 15 and the other system is back at Fedora 14. ** a friend hates it when anyone says RAID array. Redundant Arra...

Beware linux updates

As luck (or Murphys Law) would have it as soon as I started writing about setting up my new file server it crashed and would no longer boot! It started getting kernel panics and other errors and I have tracked it down to careless application of Linux system updates and NOT rebooting immediately after applying them. The result was a non-booting system which would not even boot from an older kernel (accessed by using grub). So I had to reinstall Fedora 14. I did run memtest to check for memory problems and I swapped out the PCI-Express Video card for a PCI card so I also installed another PCE-Express RAID card to give the system the full 24 SATA ports. Everything was fine with the hardware checks.

My new file server - the case

After less than two years my media server was no longer able to be expanded. There was no more room to add disks and it had heating issues - it couldn't be kept cool enough. So it was time to plan the replacement. Based on what I have learnt from the build and operation of the first one I came up with a short list. 1. Must be able to be significantly expanded with more disks 2. Must have good cooling 3. It will run a recent linux 4. Because of the number of disks it will use RAID6 These criteria should help to address some of the shortcomings of the first file server. With RAID5 it was always a significant worry when a disk failed as the rebuild phase was a prime candidate to have another disk failure. With RAID6 there is the still a risk of a disk failure during the rebuild phase but it is reduced as there are two parity disks. Also if you have to wait for a new disk to arrive the RAID6 still has one parity disk left. To get good cooling and room for lots of disks meant researchin...

Another security failure

After my adventures with VNC my son has followed it up by getting his Steam account hijacked after unknowingly installing a key logger. Valve make it too easy by allowing the hijacker to change the email address without confirmation. You do get an email with a link but the link does not disable the change of email it merely directs you to a page where you can report the hijacking. Two days later and Valve have still not responded to the report. My son is still locked out of his Steam account and cannot play $500 worth of games he legally owns. Wake up Valve - do you want your games pirated? This was another lesson in computer security and highlights the ineffectiveness of the Steam system to deal with hijacking. At least there was no credit card information to get but it is frustrating how long Valve is taking to do anything about it. I do not know what the hijacker gets out of this - they cannot (I hope) transfer the games or gift the games to someone else and even if they did surely ...

Beware vnc and upnp

My new linux box got hacked yesterday. I was careless. My ADSL router has upnp support and it is turned on by default. I enabled "Remote Desktop" in Linux - which is a version of vnc - and decided not to set a password as it would not be accessible from outside the local network. That was my first mistake. Last night I noticed a second connection to the linux box. Someone was using the browser and had connected to Western Union and was trying to install the flash plugin. They had not got very far as Fedora 14 does not install Flash on a 64bit system as it is still in beta so the install is not straightforward. I was able to disconnect this errant person before they got any further and I then disconnected the ADSL line from the modem to prevent another attempt and proceeded to diagnose what had happened. I checked the preferences for VNC and noticed the automatically configure the network check box had been selected and that it was reporting an external address could be ...