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Pickels's questions

Martin Hope
Pickels
Asked: 2011-11-07 09:08:30 +0800 CST
  • 1

Lately my Ubuntu WiFi is really slow. I upgraded to 11.10 but I already was experiencing slow WiFi in 11.04.

wlan0     IEEE 802.11abgn  ESSID:"thename"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:1E:E5:64:AF:75   
          Bit Rate=135 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-30 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:569  Invalid misc:45   Missed beacon:0

After googling I also added the following

#disable ipv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

to the etc/sysctl.conf file and restarted my system but it's still slow.

I found a command to show all the specs of my PC and pasted it here:

http://pastebin.com/jrYhZUYj

If I need to provide additional information please let me know.

wireless
Martin Hope
Pickels
Asked: 2011-05-01 00:58:41 +0800 CST
  • 20

I am fairly new to Ubuntu and I was wonder what a good way is to debug when something crashes?

For example: I installed 11.04 and the default media player banshee makes my laptop crash after a few minutes of playing music. Since the system completely freezes and there is not error message it's hard to find out what is wrong.

Second problem I have is that sometimes the system crashes to login. I am suspecting it to be a Chromium or Flash but I am not 100% sure.

So anybody got some tips on how to debug stuff like this?

debug
Martin Hope
Pickels
Asked: 2011-04-16 05:52:00 +0800 CST
  • 3

I have a new Lenovo t520 with 8gb memory and a i7 cpu. It's the first time I 'really' install Ubuntu on a pc. I have about six months of experience with Ubuntu as a guest OS on Windows in a VM.

Now what is really annoying me is how slow the visuals are on my laptop. Mostly noticeable when I have to resize or move a window. Also when scrolling text in vim/browsers it's not really as smooth as I would like it.

I read that Lenovo is using Optimus drivers for their new laptops and that these aren't supported. So I was wondering could using the integrated Intel gpu be the problem?

The CPU I have is the Core™ i7-2620M (2.70GHz, 4MB L3, 1333MHz FSB). I have tried to enable desktop effects but that didn't work.

10.10