Sunday, June 3, 2012

Multi-Monitor on the Galaxy Tab 2 and Galaxy Nexus

In my first multi-monitor display post, I wrote about using the Retina iPad 3 as a high-res portable multi-monitor display for a laptop. Today, I am going to show you the same software running on Android's Ice Cream Sandwich with the wonderful Samsung's Galaxy Tab 2 7.0" Android tablet. It also works with other Android devices such as the Nexus.

Avatron makes the same Air Display available for Android on the Google's Play Store. I was looking for something similar to my iOS and I hit jackpot. The desktop client is the same and the app works and feels like the iOS counterpart. The client app works on both Windows and Mac OSX. Below are screenshots of it running in Mac OSX.

Set up is the same as before. You select your device (s) and adjust your secondary display arrangement.


The Air Display Galaxy Tab 2 is the bottom one of the right. I love running multi monitor displays on my macbook!


And voila. Wi-Fi palette monitor; using the Galaxy Tab 2 as a secondary portable monitor. You can use the touch-screen as a virtual mouse as well.



And here it is on a 4.65" Galaxy Nexus. As you can see, the soft keys take up quite a bit of space. A 4.65" screen is cutting it close to be useable.

A few things to note. With Ice-Cream Sandwich, you don't get the full screen. The virtual soft keys (home/back/menu) and task bar still exists. Hence, you lose some resolution compared to an iOS device.

1024x600 on the Galaxy Nexus
1024x540 on the Galaxy Tab 2
2048x1536 on the iPad 3 in Retina mode. (1024x768 other mode).

The only missing feature from the iOS version is virtual keyboard. Both have virtual mouses but with the iPad, you can pull up the tablet's keyboard to enter text or type within apps inside your Air Display monitor.

Next, the other issue is the inability to power multiple "Air Display" devices; meaning I am unable to use all my devices as 4th or 5th monitors at the same time.
I have some DisplayLink usb powered monitors and I can daisy chain up to 6 DisplayLink monitors to my MacBookPro. It would be nice to have a similar feature with Air Display.

Lastly, the refresh is rather laggy and slow. This is expected since the redraw is taking place over WIFI. The speed of your refresh depends on the speed of your WIFi network and your devices. Both my Samsung devices, in general, have poor WIFI connections. This doesn't bother me because I use these monitors as palette displays to show non-motion material. I use them mostly for displaying error logs, mail, and terminal windows which do not need fast refresh. Depending on your use case, this may not be ideal for you. Considering that the application cost 5,ドル the investment is low compared to buying and lugging extra monitors around.

And a word of advice. If you ever plan to use a WIFI monitor or even some sort of Remote Desktop (VNC/RDP/X11), always choose a solid color like dark grey for your background. It makes it easier on the refresh and redrawing.


Link: Air Display at Google's Play Store



Saturday, June 2, 2012

1366x768 resolution must die.




1366×768 screen resolution now accounts for 19.28% of world wide web usage, up from just 0.68% in May 2009. This is according to Stat Counter. This makes sense if you ever happen to stop inside a computer store.

This resolution needs to die. Seriously, it needs to go.

In my picture above, you have a 11" laptop and a 15.6" laptop both running the same awful resolution. It isn't so bad on the 11" and I would say it is appropriate for that screen size. However, if you go into any Best Buy, Staples, or Office Depot, 95% of the laptops are running that resolution. You have 15" quad core i7 laptops with blu-ray running that resolution. All that power wasted on that screen space. The HP 15.6" pictured above is an example of that. On that 15.6 HP, everything is blurry and fuzzy. The extra screen size offers no real improvement. You get the same working space. Pictures and text look the same but just bigger.

I have a 13" Macbook Pro at 1280x800 which is no better. At least that extra 32 pixels of vertical resolution does make a small difference.

I'm not suggesting that everyone goes out and get a 900p or 1080p screen. I think manufactures need to step it up and offer higher resolutions on at least 14" and 15" screens.


Some other reading Links:
http://techcrunch.com/2012/04/11/move-over-1024x768-the-most-popular-screen-resolution-on-the-web-is-now-1366x768/

http://www.electronista.com/articles/12/04/11/resolution.1024x768.not.most.popular.worldwide/

Friday, June 1, 2012

Can't get enough storage




You can never get enough storage. Drives prices are getting back to normal and SSD prices are plummeting. I decided to get some Crucial M4s in 256 and 128GB varieties. Frys had a great discount Seagate Hybrid 7200 Momentus HDD/SSD cache drives so I got Best Buy to match those prices. I also got a mSATA drive for my new Thinkpad. I am thinking triple SSDs: internal 256GB Boot, 128GB in the ultrabay CD dock, and a mSata for swap/virtualmachines. Or I just do SSD boot and Momentus Hybrid drive in ultrabay.







After reading Storage Review's review of M4s in RAID 0, I may just try striping a RAID-0 with my two 128GB SSDs. Up to 900 megabytes a second!








It is like Christmas in Summer.


Isolate WiFi from LAN with Smoothwall Proxy


BYOD (bring your own device) has recently become a burden in the workplace. Employees, clients, and vendors are bringing in laptops, iPads, and iPhones into your workplace. Most expect a WiFi connection and this can cause serious security implications. You want to give your users (especially clients) the freedom yet at the same time, you want to protect your private internal network. We want our clients to surf the web but not be able to access file and print services.

The way to do this is to isolate WIFI traffic from the internal LAN. Preferably, place the WIFI network on its own network.

This was exactly the dilemma I faced 9 months ago. How do we provide WiFi yet make sure it is not abused? Our other consideration was cost.

We already spent a load of money on our main firewall, switches and network. We had no budget to introduce a secured "WiFi" appliance that could cost in the thousands. Yet, we needed features like QoS (Quality of Service), Proxy, advance logging, and many of the enterprise features you find on Cisco or Juniper products.

Our solution? We ended up with an open-source system called Smoothwall (http://www.smoothwall.org/). Smoothwall is a light-weight open-source firewall project. 

We like it because it provided us with DHCP and Squid Proxy that worked transparently without end-user configuration. 
Our WiFi users do not know they are on a Proxy unless they visit a prohibited site like Porn or bitorrent. This also allowed us to give semi-admin access to people who we trust but not enough to let them have access to the main firewall. Furthermore, with a different system from our LAN,  it allows us to separate Internet logs. The logs of clients using our WiFi is not as critical as the logs used by employees on the internal LAN.


Smoothwall can run on minimal hardware. The installer ISO CD image is a mere 115 megabytes. It runs on an old Pentium 4 with 1GB of RAM and compact-flash card. Instead of junking old equipment, we constantly find new uses thanks to open-source. It has worked surprisingly well; servicing over 60 concurrent users on a daily basis.


The network topology is very simple. Like most business that provide front facing internet services, we have two network zones - Our LAN and our DMZ (De-Militarized Zone). The DMZ is where we host web servers that are isolated from our internal LAN. We could have run a third zone but prefer to keep it simple for remote VPN-in.



We placed our new Smoothwall Wifi Proxy server inside our DMZ. The main firewall already blocks traffic based on various rules.  Now with the Smoothwall box, we have a second layer of firewall protection. In case someone breaks out of our Wi-Fi zone, they would have to go through two layers of firewalls to access internal LAN services. AP (Access points) are then tethered to the Smoothwall appliance. I have various base stations and repeaters connected just to the Smoothwall box.




As I mentioned earlier, Smoothwall runs nicely on older, lower spec machines. Installation is very straightforward. You set up your network zones and you are ready to go. At minimum, you need to have two : Red / Green. Red for protected traffic and Green for WAN. You will need at minimum two Ethernet cards. You could run on one card if your switch supports virtual VLANs and if you want to go through the step of extra configuration. I prefer to make it simple and stick to the two NIC method.


(look someone likes to spend time on hulu.com)

Once set-up, you can do the majority of your configuration through a web browser interface. There are some nice logging tools and configuration settings.
If you need to do anything more complicated like modify the Squid Proxy with exotic rules, you can always SSH into the console and manually configure. This is the beauty of *NIX based operating systems.

I can easily log into this box with my iPad via SSH and set rules to block users from using Facebook/Twitter at 7AM.
For non-technical users, the web interface works rather intuitively. A non-technical user can probably set rules such as QoS (Quality of Service) such as slow down the traffic for video streaming. Disable peer-to-peer traffic.

In summary, there are many good free, viable open-source solutions to BYOD. You can safely provide WIFI and secure it from your internal network. In fact, it works so well, I will be implementing a similar system at home when my children are of high-school age.





Thursday, May 31, 2012

Wild Rumors of the Mac Pros Demise

There has been wild speculation that Apple will axe the slow-selling Mac Pro line. Over 16,000 people have signed a Facebook petition. Wild and rampant speculation on the Internet suggest that Apple wants pros to use iMacs instead.



The argument goes like this: Apple has been making loads of money on iDevices and they have no time for slow selling devices. The Mac Pros do not sell in high volumes like the other products. Basically, the MacPros have taken a back seat to iPads, iPhones and Macbook Airs. On the surface level, this makes a lot of sense for people. But, I am here to say they are WRONG.

Before I go into my argument, I want to remind people of a few things: Apple needs content and app developers for their iOS devices. With Retina displays of the new iPad and upcoming Macbooks, you need beefy workstations that can power possibly 4K (4096x4096) monitors. Furthermore, why would Apple be touting Final Cut's ability to do 4K video if all they have to sell are iMacs. Lastly, Apple's rumored acquisition of the Italian music editing startup Redmatica suggest they are still in the content creation business.

Now for my main argument.

The reason why Apple hasn't updated the Mac Pros in over two years is very simple. The fault lies squarely with Intel. Yes, it is all Intel's fault. Just like Motorola failing to provide updated G5 PowerPC processors in the past, Apple is at the mercy of their CPU supplier.

The Workstation Xeon class architecture has not been updated in over 2 years. Up to 17 days ago, Intel did not have dual socket Sandy Bridge processors until May 14 of 2012. Don't believe me, go to Wikipedia and Intel's product pages:

http://en.wikipedia.org/wiki/List_of_Intel_Xeon_microprocessors#Xeon_E5_.28dual-processor.29
and
Intel® Xeon® Processor E5-2420 http://ark.intel.com/products/64617

So all you guys who are claiming you can build Hackintoshes better than what Apple has been giving up for the past 2 years need to give it a rest.

A Quad/Six-core i7 is not the same class as a multi-socket Xeon. The highest available memory you can get on a i7-3930K processor is 32GB of memory. With the two year old Mac Pro architecture, you can go up to 64GB. The new E5-2420 Sandy Bridge Xeon can go up to 375GB of ram.

Now for folks who don't understand all this technical babble. I'll make it simple.

Xeon Class architecture allows system builders to build multi-socket systems. Meaning, you can have two CPUs on the same motherboard. You can have two six-core CPUs and your system will be seen as a 12-core processor. Simple isn't it?

For the past two years, Intel was slow on the boat. The consumer grade i7s could not be made into multi-cpu systems. Meaning, you couldn't go to Fry's Electronics and buy two i7 CPUs and put them into a motherboard.
To do this, you needed a Xeon Class system- CPU, Motherboard and architecture. Furthermore, XEON class systems are more industrial. They often run ECC protected memory.
A Hackintosh i7 will not be the same as a MacPro or any XEON class workstations from companies like HP or Dell.

Sure,the benchmarks of the consumer grade Sandy Bridges have been smoking some of their XEON server based counterparts. I won't deny that. However, I cant see how Apple could have produced a single socket Mac Pro, price it at 2,000ドル and call it a workstation.

They could have made a new line called the Mac Pro Mini. A mini-ATX styled Mac Pro like in the same vein as the PowerMac 8100 was to the Powermac9100. It would be a smaller box with less expansion. Possibly a single socket, 4 banks of ram, 1 drive bay and 1 PCI slot. They could have sold it at 1500ドル and I would be one of the first buyers. However, I don't have access to their sales so I don't know if that would have been a wise move.

Am I happy about the situation? No. But people need to evaluate the facts first. Until there is final word from Cupertino. everything is pure speculation.











Wednesday, May 30, 2012

Whatever happened to true Docking Stations

Today, I won an ebay bid for a brand new Lenovo Thinkpad mini dock 3 and it brought back some memories. I am thinking about the convenience of docking at work and having my stuff all ready to go. No hassles of cables and clutter.

Unfortunately, modern day docking stations are simply port-replicators for convenience. In the past, they are way much more.


Long before the turn of the millennium, you could buy a true desktop replacement docking station filled with full slots and expansion capabilities. I clearly remembered spending over 4,000ドル for an IBM Thinkpad 600e setup up with a Selectadock III. Dell and HP had a competing line of products for their workstation laptops. Apple had, well, they had the mini duo or duo dock.

The docking station of yore had full PCI slots and on-board SCSI. That was truly a beast and exemplified IBM's build quality. I remember adding all sorts of PCI cards like a dedicated MPEG2 decoder that can't even compete with modern smartphones. And remember the Adaptec 2940 Ultra-wide SCSI card? Yep, I had one of those running off a Thinkpad. I had "Scuuuuuzeeeee " server class drives. I forgot, I also had a floppy bay Iomega Zip Drive. I could literally host a ISP back then.





I can't really complain about my new setup. A Lenovo port-replicator it is! I wonder how the Thinkpad brand would have flourished if IBM kept it.



However,today's laptops will do so much more. The T and W series Thinkpads have Expresscard slots and they can power dual/triple monitors up to 2560x1600 through displayport. Expansion is handle by USB and firewire.

The new Macbook Pros have Thunderbolt and you can get expensive Thunderbolt-to-PCIE bridge box enclosures. I've seen them set up with RED rocket video cards for working with 4K video.

Still, I can't fathom the possibilities if manufactures made full docking stations instead of port replicators. I also wonder what it would be like to have a modern day 600E/600X Thinkpad. Those things were built like tanks.

I will post a review of the Lenovo "port replicator" and how it works with Linux in the coming weeks.

Long term HP TouchPad review


I was one of the lucky few to grab a few Touchpads during the infamous "Fire-Sale."
It has been 9 months of ownership and how has does it hold up? I'm still undecided.

First of all, the hardware is clunky and un-reliable. I bought one for my dad and it was sent in FOUR times for service. During the post file sale period, HP did not issue replacements. Each time they went in for service, my dad was without his Touchpad for weeks. His Touchpad is stock webOS so his problems were strictly hardware. My 32GB model has been sent in once. There is already a crack along the speaker edge. Moreover, the device is rather heavy. I owned all the generations of iPad and the Touchpad feels heavier than the 1st gen iPad.

At 99ドル-149,ドル I really can't complain. There were times I was tempted to unload them on Craigslist or Ebay. I wish I did because I could have gotten 300ドル or so for a 32GB in the early days.

As luck would have it, there were always something that made me keep it.

I'll list a couple of cool things.

I could run basilisk 2 to emulate a mac classic "in-color."


I installed Ubuntu on it. Running mySQL Administrator, Python, full desktop Chromium/Firefox was cool. WebOS version of CHROOT doesn't require a goofy VNC server like on Android. WebOS's preware gives you a native X11 server.





Of course, you can install Android Ice Cream Sandwich via Cyanogenmod. Somethings don't work like the webcam and headphone jack but the Alpha 2 brought accelerated video playback. Netflix works great on this device.



I also run MAME on it inside my MAME icade cabinet.



Since I have four tablets in the household, I still don't have a good reason to keep it around. Except, it is pretty much now a worry-free disposable device. For example, when I work-out on the treadmill, I place the Touchpad without worry. I don't get paranoid if I drop or break it. Whenever all the iPads have been grabbed and accounted for, I could always pull the HP Touchpad out to use as a Netflix player. That is pretty much what it has been relegated to. My four year old son feels punished when I hand him the Touchpad due to the lack of games or entertainment options for Ice Cream Sandwich (ICS). In my family, I am the one who always ends up with the Touchpad.

Everyone else I know who got a Touchpad during the firesale is in the same position as me. Their devices have been socked away in some drawer; collecting dust.


So I guess I can't complain. They were pretty cheap to begin with. I could never imagine spending 500ドル for one. So now, MAME and Netflix are the reasons why I keep the Touchpad around.







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