Ufff!!!!!! A major and a right change.
I migrated from redhat 5.5 64-bit to ubuntu 9.0.4 (lucid) 32bit. I have been trying to check whether I really need windows xp or not. For the past one month, I never required to boot up my windows xp machine. I am very much comfortable with ubuntu running required ibm softwares (sametime/lotus notes etc).
It took only 4 hrs to change to ubuntu from redhat and moving the data from my redhat to ubuntu. Everything changed over a weekend.
The challenges with Redhat 5.5 64bit are the following.
1. Less matured software stack. You dont find many software working. For every software to work I had to toil for around a week. This affected my productivity very very deeply. It is definitely NOT out of the box.
2. Relatively slow compared against ubuntu. Windows XP is much slower against redhat linux.
3. Relatively less information in internet over ubuntu. Of course google is our window to internet. Through google I could not find much information for redhat 64-bit.
Cons of ubuntu 32-bit against redhat 64-bit. I am able to attribute it to 32-bit vs 64-bit more than ubuntu vs redhat.
1. Java programs are running relatively slower.
2. It is not able to take better memory. Previously in redhat 64-bit, I was able to run with 4G memory using -Xmx option. However in ubuntu, the maximum that I could use is only 2.5G.
These prompted me to move to ubuntu. My current configuration with ubuntu.
1. W500 machine dual core
2. ubuntu 10.0.4(lucid) 32-bit. Didnt try with 64 bit as ubuntu recommends to go for 32bit over 64bit. I religiously followed their recommendation with out any hesitation.
3. Virtual box for windows xp and slax linux for browsing
4. Pidgin for sametime, gtalk
5. skype for video chat. Pidgin for video chat with gtalk users.
6. firefox as browser
7. Lotus notes for mailing
8. Notes symphony/open office for office tools
9. IBM's software layer for ubuntu.
10. Development - eclipse/kdesvn. Eclipse svn is not working.
In ubuntu it really required me to add very limited softwares and adding software was also very easy through apt-get and synaptic package manager.
The major challenge was making windows xp working on the virtual box. It kept hanging at agpcpq.sys. I used the .vmdk file that I created using vmware. Virtualbox seamless understood the .vmdk format. After surveying for sometime, I found that I have to enable the IO APIC option in the advanced settings of the virtual machine. Making the xp inside virtualbox to connect to network over my wireless was another challenges. Survey almost for 2 hrs. Bridged networking over wireless is still a problem. Enabled the ip_forward to" yes" and used NAT. This made the XP inside virtualbox start connecting to internet over my ubuntu wireless.
Things that are not working.
1. SVN on eclipse.
2. Pidgin hangs when someone else is calls me for a video chat. However it works when I call. Looks like a bug!!
3. vmware on ubuntu is still tough. It fails at many places. Ofcourse you have virtual box as alternative.
Overall I feel the gap between windows as OS and Linux as OS is reducing. Still there are some gaps but it will eliminated over a period of time. Few friends of mine are motivated to try out ubuntu over windows xp.
If you have any doubts in the above setting please dont hesistate ot reach me!!
my desktop ubuntu 10.0.4 (lucid) + virtual box (for slax and windows xp)
ramakrishnan.kannan 270000WMVD Identificações:  agpcpq.sys virtualbox wireless ubuntu vmdk hangs networking windowsxp 2.034 Visitas