I've build a kernel for my Huawei G300/U8815 smartphone yesterday. Based on the Huawei v3.0.8 kernel code, I've added overclocking, governers and I/O schedulers and added some minor tweaks here and there. Not a lot of other features yet, but I'm quite surprised with the results so far in battery life and performance. So see for yourself. Tested with stock Huawei B927 ROM, up to 1.3GHz.
Tested for performance with max 1.306GHz and min 480MHz frequency, governor "Performance" and I/O Scheduler "VR" I get a AnTuTu score of 3542. This is with lots of applications installed and active. Not bad at all I think
Tested for battery life with max 1GHz and min 122MHz frequency, governor "SmartassV2" and I/O Scheduler "VR" for 11 hours. Battery dropped 0%(?!) during that time. While not sure if that's really correct and representative I started using the browser intensively, made a 5min telephone call and used whatsapp. Battery dropped from 75% to 68% during that time. Needs more testing I guess, but please post your results here!
Use something like "No-frills CPU control" from the Market to quickly set the CPU frequencies, Governor and I/O Scheduler to use. Try different options to find out which combination works out best for your specific situation(s).
I packaged the kernel as an "update.zip" so it can be easily flashed from CWM. It only updates the kernel, no need to clear caches or wipe data or anything. Just make sure to have a backup in case you want to go back to the stock kernel.
Needless to say maybe, but I'll do it anyway... Be careful with overclocking your device. Overclocking will cause a CPU to have a shorter life expectancy. Apart from that, I take no responsibility whatsoever if you fry your CPU
Last but not least a shameless plug... there is this nice "Donate" button on the left side of this page. Feel free to use it if you like what you see.
More to come...
Download the kernel here (md5: 1a00982486bbff62907624c2507ebbd9)
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Ubuntu Jaunty (v9.04) was the last version that supports armv5te CPUs. The current versions only runs on the newer ARM processors (armv7+). So that meant I had to re-target all armv7 specific packages to make them work on the (older) armv5te CPUs again. Since this is the only way to get the newer Ubuntu versions going on our beloved Zaurus, it had to be done!
What a work! It probably can be done much quicker, but here's what I did. I took a debootstrap of the ARM (armv7+) version of the official Ubuntu Lucid version to begin with, and started rebuilding all packages one by one, re-targetting them for the armv5te CPUs. Some of the packages need special attention, and others can "just" be recompiled. I have to say, the GuruPlug is really a marvellous piece of hardware, and just perfect for doing this kind of stuff. It's just great not having to concentrate on all these cross-compilation problems you have to deal with when building ARM packages on the i586 platform. I can assure you, the GuruPlug saved me quite some headache!
Before you're going to ask me where all the fun stuff can be downloaded, this post is first of all meant as a status update of the project. Currently I only have the minimal Ubuntu distribution working. All compiled from the original Ubuntu sources, with just minimal changes to some of the packages.
So, no, the complete repository isn't available yet. But I just wanted you all to know that the good news is that it is still possible to get the latest and greatest version of Ubuntu working on our Zaurus. Woohoo!
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PlugComputer arrived last friday. The GuruPlug Server Plus to be exact. What a great little gadget that is. I'm still experimenting, but I'm amazed by the speed. Bottleneck now seems to be the harddrive I'm using, which is a cheap USB drive. So I'll have to pick up a eSATA drive I guess.
Oh, and regarding all reported problems on overheating... no problems here!
This means new possibilities for Zubuntu... More on this later!
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So, there are lots of things to do, meaning I have to spend more hours experimenting, debugging, configuring. -sigh-
First try on getting the htc-hero theme running didn't work. Would by nice to have that working as well...
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Oh, and yes, I will provide patches and source... When I'm ready. Power management is still not 100% working, so I need more time to fix it. The kernel config can be extracted using the config-module.
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Just after releasing version 2.0 I found that there are some things that need to be fixed. I think it's handy when I start a list here with known problems and their solution (whenever I found one). Decide for yourself if it's worth fixing, or if you rather wait for me to upload a new release, which could take a while.
As always, I welcome any feedback, and please report problems, share fixes, enhancements etc.
libqt3-mtisn't installed. Install it with
apt-get install libqt3-mt. If you don't have an internet connection setup download it here and copy the file into
/var/cache/apt/archives, then install it with the command above.
Apart from the missing package you need to move some libraries. Do this with
mv /opt/kdepimpi/lib* /usr/lib. This should make the kdepimpi applications working.
alsamixer, and change the following settings:
Left mixer (is [off], press "M" to enable) Right mixer (is [off], press "M" to enable) Speaker (use "up-key" to turn volume up) Right mixer left (is [off], press "M" to enable) Left mixer right (is [off], press "M" to enable)
You'll find them all the way to the right. Exit
alsamixerby pressing the "cancel" key twice. This should enable sound.
apt-get updatefollowed by
apt-get upgradeto get the latest package updates from the repositories you'll find that some packages bail out with an 'illegal instruction' error. This is due to a bug in libstdc++6. For now, hold your horses and wait before upgrading.
Other things that need to be fixed:
Mapping volume up and down on the back Screen swivel auto rotation
[ updated 01-09-2009 ]
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Zubuntu v2.0 is based on Ubuntu 9.10 "Karmic Koala" and is using the latest linux 2.6.31-rc8 kernel.
For all of you lucky enough to own a Spitz (SL-C3000, SL-C3100 and SL-C3200) please download the root filesystem and the root-addition archive containing the device-specific kernel and the kernel-modules for Spitz,
Please use the installation instructions from the previous version.
More info on this later. Now I need a good nights sleep first!
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we can't help being disappointed by the specs. Pocketability and connectivity are my main worries. I just want to take the device from my jacket (size) and be online all the time (3G). But, apart from that, the keyboard looks great, the CPU speed and internal memory is enough to run most apps comfortably and battery life seems stunning (unchecked, have to see it first). Current mid/netbook trend has done great things in terms of optimizations of the Linux operating system, and since the PC-Z1 (the Z refers to little Zaurus brother of course) runs Linux, the limits of possibilities take a huge step forward compared to our beloved Zaurus.
I say this is a great upgrade from the Zaurus, much better than any of those battery slurping, overpriced and overweight Wintel based things thrown at us for months now.
Time for a group buy. I'll check what Brett can do for us. Anyone in? The more the merrier
PS: The PS-Z1 seems to be based on Ubuntu 9.04... Would be cool to have a Zubuntu 2.0 based on 9.10 for the Zaurus in the meantime. Oh, what the heck, I'll upload one later.
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Buffalo WLI2-CF-S11 compact flash card. Although the card worked nicely for a while, it has always been a troublesome experience setting it up. I guess last time I had it working was before I changed my home networking security from WEP to WPA.
So I figured today was the time to delve into the secrets of chipsets, firmware and flashing, just to see if I could get the Buffalo running again in Zubuntu.
First I checked for the chipset on the Buffalo card. Where else than on OESF I found that the Buffalo had a Prism 2.5 chipset. Next thing I checked was whether there was a way to update the firmware. I had no idea, never tried actually. I found this great site with lots of interesting information about flashing prism2 firmware.
I noted the information (using the '
dmesg|tail' command) after inserting the card into the Zaurus. It said:
wifi0: NIC: id=0x800c v1.0.0
wifi0: PRI: id=0x15 v1.1.0
wifi0: STA: id=0x1f v1.3.5
wifi0: defaulting to host-based encryption as a workaround for firmware bug in Host AP mode WEP
wifi0: defaulting to bogus WDS frame as a workaround for firmware bug in Host AP mode WDS
wifi0: registered netdevice wlan0
Using this handy reference table, I found that in my case, having a NIC id of 800c, I needed a primary 'K' and secondary 'F' release code of the Prism2 firmware. So I downloaded the firmware, using version 1.1.1 (
pk010101.hex) for the primary firmware and version 1.8.2 (
sf010802.hex) for the station firmware. Version 1.8.2 is not the latest (that is 1.8.4) but reportingly the most stable version, so I went for that one.
I used the Zaurus to do the actual firmware flashing. The
hostap-utilspackage contains the
prism2_srecutility, which is used for the firmware flashing. After doing a testrun using...
# prism2_srec -v wlan0 pk010101.hex sf010802.hex
...I saw no significant errors of any kind, so I then started the actual flashing using...
# prism2_srec -v -f wlan0 pk010101.hex sf010802.hex
This went flawlessly, and '
dmesg|tail' now told me:
wifi0: NIC: id=0x800c v1.0.0
wifi0: PRI: id=0x15 v1.1.1
wifi0: STA: id=0x1f v1.8.2
Firmware upgrade went fine this far, according to the version upgrade, so now it was time to check whether or not the card supported any new features, WPA being the most important for me.
In the current version of Zubuntu I use WICD as network manager. In the properties I saw my home network instantly (it was not shown at all before the flash upgrade) and I could choose WPA as well. After entering my WPA passphrase I was connected to my wireless home network in just a minute.
This was worth the upgrade, I hope this is of any help to any of you. It may be worth upgrading your wireless card as well. Be careful to pick the right firmware versions for you specific situation!
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2.6.31-rc3 kernel MD5: 602d83142fbf3d8692e4adf4dee07b4d 2.6.31-rc3 modules MD5: b154506766ead4018140ca3c8bef9a63
Like previous kernels, the offline charging code still doesn't work, but at least the suspend/resume works again (thanks to Eric Miao for helping out again). This kernel also has all drivers compiled in to get Android going, so hopefully more on that later as well.
Again, please give it a try and give me feedback on your findings!
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