Error installing Ubuntu

[mediator]

Originally Posted by aadipa

Hree is arp -v

ashish@Ashish-Linux:~$ arp -v
Address                  HWtype  HWaddress           Flags Mask            Iface
125.99.88.1              ether   00:14:F1:D9:9C:05   C                     eth0
Entries: 1      Skipped: 0      Found: 1

Guess thats the gateway then. Add the default gateway now and check if it pings "ping 4.2.2.1".

[aadipa]

I tried this syntax.. here is the error I got.

sudo route add -net 0.0.0.0 gw 125.99.88.1
SIOCADDRT: No such process

[praka123]

open a terminal and try whether u can ping IP's :

 ping -c3 76.162.89.197

[mediator]

Originally Posted by aadipa

I tried this syntax.. here is the error I got.

sudo route add -net 0.0.0.0 gw 125.99.88.1
SIOCADDRT: No such process

Command is wrong again! Try
'sudo route add default gw 125.99.88.1'

[aadipa]

remove networkmanager

done.. no effect.

Originally Posted by mediator

Command is wrong again! Try
'sudo route add default gw 125.99.88.1'

SIOCADDRT: No such process

ping 4.2.2.1
ping -c3 76.162.89.197

connect: Network is unreachable

Also just I tried to ping some IPs in my IP range, and strangly it works.
I was able to ping 125.99.92.1 but if I go to anything other than 125.99.92.xxx it won't work. It seems that OS is not using the netmask and guessing its own netmask.

[mediator]

1.First remove any gateway that is present
- a. u check that from 'route -nee'
- b. n implement as 'sudo route del default gw xx.xx.xx.xx'

2. Now fill in the gateway. Try "125.99.92.1" now!
'sudo route add default gw 125.99.92.1"


AFAIR, the error u encountered is also thrown when the gateway being filled is not valid!!

[aadipa]

oops i just edited /etc/network/interfaces to look like this

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
address 125.99.92.174
netmask 255.255.252.0
gateway 125.99.92.1

restarted the machine and now its working..

Still this is not a perfect solution as I can work with 125.99.88.1 as gateway in Windows XP but Ubuntu doesn't accept it. Now next task compiz-fusion

[gary4gar]

For Compiz fusion first Check whether your video card for 3D.

 glxinfo | grep rendering

1) It should say yes & else post back with your model no.

2) Click ME to install compiz-setting-manager.

3) Go to System>Preferences>Appearance>Visual Effects>Custom
Select Preferences. Now enable & disable pulgins according to your needs.
watch this video for what plugin does what
www.youtube.com/watch?v=E4Fbk52Mk1w

For Keyboard Shortcuts
check this
http://ulyssesonline.com/2007/10/25/...ard-shortcuts/

[mediator]

@mehul, can u provide some links explaining about "gateway goes with the netmask" in such a scenario as this thread. Man I am losing my memory. Will have to revive on this neways!

@aadipa : Congos! But neways, can please provide the output of "tracert 125.99.88.1" and "tracert yahoo.com" from windows just for my observation?? And yeah here's the eye kandy.

[mehulved]

I have never read it from textual stuff really. About netmask I have learnt from watching people and managing the network at FOSS Lab.
Search engines should give you good enough information. There are lots of subnet calculators out there which will aid in explanation of the concept by doing the calculation at the page. And there's always wikipedia.

[aadipa]

Originally Posted by mediator

@aadipa : can please provide the output of "tracert 125.99.88.1" and "tracert yahoo.com" from windows just for my observation??

>tracert 125.99.88.1
Tracing route to 125.99.88.1 over a maximum of 30 hops
  1    12 ms    13 ms    11 ms  125.99.88.1
Trace complete.
 
>tracert yahoo.com
Tracing route to yahoo.com [66.94.234.13]
over a maximum of 30 hops:
  1    13 ms    31 ms     8 ms  10.80.0.1
  2     9 ms    13 ms    15 ms  125.99.125.21
  3    15 ms    10 ms     9 ms  192.168.27.2
  4    11 ms    14 ms     *     203.101.94.117
  5    38 ms    45 ms    39 ms  125.21.167.74
  6   273 ms   259 ms   275 ms  p4-1-0-1.r03.lsanca03.us.bb.gin.ntt.net [204.1.253.65]
  7   254 ms   259 ms   260 ms  xe-3-3-0.r20.lsanca03.us.bb.gin.ntt.net [129.250.2.141]
  8   270 ms     *      265 ms  as-0.r21.snjsca04.us.bb.gin.ntt.net [129.250.4.96]
  9   302 ms   303 ms   312 ms  ae-0.r20.plalca01.us.bb.gin.ntt.net [129.250.4.118]
 10   301 ms   303 ms   303 ms  208.50.13.97
 11   305 ms   302 ms   311 ms  ge4-1-10G.ar2.SJC2.gblx.net [67.17.105.6]
 12   321 ms   322 ms   322 ms  yahoo-1.ar2.SJC2.gblx.net [64.208.110.162]
 13   330 ms   317 ms   318 ms  ge-4-0-0-p460.msr1.scd.yahoo.com [216.115.106.209]
 14   329 ms   326 ms   311 ms  ten-2-3-bas2.scd.yahoo.com [66.218.82.223]
 15   318 ms   320 ms   332 ms  w2.rc.vip.scd.yahoo.com [66.94.234.13]
Trace complete.

My IP is 125.99.92.174 and subnet is 255.255.252.0 That is

01111101.01100011.01011100.10101110 = 125.99.92.174
11111111.11111111.11111100.00000000 = 255.255.252.0
 
So start IP in range is
01111101.01100011.01011100.00000001 = 125.99.92.1
 
And end IP is
01111101.01100011.01011111.11111111 = 125.99.95.255

That means my gateway is not in IP range, had my mask been 255.255.248.0 (EDIT: /21), it would be valid address in range. Am I correct?


Also I have installed compiz-fusion. Had to add software sources first. And while testing different effects, I managed to *may be* crashed it couple of times.

One more problem. Login screen and Totem player full screen mode don't like my widescreen monitor, they work like square monitor with right aligned.

My display card is onboard Intel G33 (Asus P5K-VM) and monitor is ViewSonic VG1930wm running at 1440x900 @ 75 Hz or 60 Hz.

[QwertyManiac]

Add this Virtual entry along with your other Section "Monitor"'s SubSection "Modes" in /etc/X11/xorg.conf

Virtual 1440 990

Overall, might look like this:

Section “Screen”
Identifier “Default Screen”
Device “ATI Technologies Inc RV280 [Radeon 9200 PRO]”
Monitor “HP D8901″
DefaultDepth 24
SubSection “Display”
depth 24
Virtual 1440 990
modes “1280×1024@60″ “1024×768@60″ “1024×768@43″ “1024×768@70″ “1152×864@75″ “1024×768@75″ “1280×960@60″ “1024×768@85″ “832×624@75″ “1400×1050@60″ “800×600@60″ “800×600@85″ “800×600@75″ “800×600@72″ “800×600@56″ “640×480@85″ “640×480@75″ “640×480@72″ “640×480@60″
EndSubSection
EndSection

This must fix the GDM Login Screen's issue but I don't know about Totem using this too..

[gary4gar]

What is a subnet/net mask & what its real use?

/me A newbie in netoworking

[mehulved]

gary read the wikipedia entry.
yeah my mistake in calculating the subnet. I checked with the calculator. It's 92 to 95 not 92 to 88

[Faun]

Originally Posted by gary4gar

What is a subnet/net mask & what its real use?

/me A newbie in netoworking

it divides networks and increases the no of ip addresses

[mediator]

That means my gateway is not in IP range, had my mask been 255.255.248.0 (/26), it would be valid address in range. Am I correct?

No. The gateway u finally got working with is the one that is in ur IP range. For any 2 machines to communicate on a LAN, they need to be on the same IP range. Gateway is the one that has atleast two NICs and that means it is connected to different networks and can allow packets from one network to pass to another.

'255.255.248.0' (/21) defines ur subnetmask.

What is a subnet/net mask & what its real use?

U can google for that for better understanding. And it used to create complicated networks where an organization's network is split into a spider's web. I guess one such instance is of @aadipa's....nicely done, as u can see from tracert outputs that "tracert 125.99.88.1" doesn't show the main gateway and "tracert yahoo.com" doesn't show "125.99.88.1". It seems that some transparency/proxy concepts have been utilized there. Lets seee

[aadipa]

my bad.. corrected /26 to /21.

Originally Posted by mediator

No. The gateway u finally got working with is the one that is in ur IP range.

Yes.. 125.99.92.1 is in my IP range with mask 255.255.252.0, but for 125.99.88.1 to be in IP range my mask must be 255.255.248.0
Am I correct?

In this case I will ask my ISP (hathway) to either give 125.99.92.1 as gateway and keep netmask at 255.255.252.0 or continue with 125.99.88.1 gateway with changed netmask 255.255.248.0

[mediator]

Originally Posted by aadipa

my bad.. corrected /26 to /21.


Yes.. 125.99.92.1 is in my IP range with mask 255.255.252.0, but for 125.99.88.1 to be in IP range my mask must be 255.255.248.0
Am I correct?

In this case I will ask my ISP (hathway) to either give 125.99.92.1 as gateway and keep netmask at 255.255.252.0 or continue with 125.99.88.1 gateway with changed netmask 255.255.248.0

No dude. The netmask is used to define and divide an IP into subnets!! With the entry 248 /21, it means u can create : 2^2+2^1+2^0 subnets.
11111111.11111111.11111000.00000000 => 255 . 255 . 248 . 0

And ur gateway is fine. Its 125.99.92.1. Try it out on windows too. It shud work!!
Like I said earlier in my first post. The gateway shud be on the same range. But in ur windows it showed differently. Thats what had me confused. But then look at ut tracert outputs. It doesn't show 125.99.88.1 on 'tracert yahoo.com' and not '125.99.92.1' on 'tracert 125.99.88.1'. Certainly 125.99.92.1 is ur main gateway. If I remember correctly it is a concept of proxy-arp or maybe something else that I have forgotten. But neways, if u need to ask ur ISP, then ask em the network topography just for ur understanding.

[mehulved]

You should definitely contact Hathway regarding your gateway. Mine's a much saner one. My gateway is 202.88.177.1 for IP 202.88.177.211