Equipment: Laptop Lenovo X201 with Intel Corporation Centrino
Ultimate-N 6300 (rev 0x74)
Wireless Router Belkin
Environment Router in room below, many devices connected.
Ubuntu Kernel AP Mode Measured Speed (iperf)
Link Quality Bit Rate Works
Oneiric 3.0.0-12-generic #20-ubuntu ABGN mixed 158 Kbits/sec
64/70 240 Mbits/sec No
Oneiric 2.6.39-020639 ABGN mixed 101 Kbits/sec
63/70 135 Mbits/sec No
Oneiric 3.0.0-0300-generic #201107220917 ABGN mixed 17.5 Kbits/sec
67/70 120 Mbits/sec No
Oneiric 3.0.0-0300-generic #201107220917 G Only 11.2 Mbits/sec
60/70 54 Mbits/sec Yes
Natty 2.6.38-13-generic #52-Ubuntu ABGN mixed 11.7 Mbits/sec
66/70 54 Mbits/sec Yes
Natty 2.6.38-020638-generic ABGN mixed 12.3 Mbits/sec
68/70 54 Mbits/sec Yes
Natty 2.6.39-020639rc4-generic ABGN mixed 13.5 Mbits/sec
66/70 54 Mbits/sec Yes
So I've run nearly identical kernels on both natty and oneiric, 2.6.39-020639
only difference being the natty one was RC4
So unless something changed between those kernels, natty is limited to G speeds
regardless and suffers no performance degredation
Where as oneiric isn't limited and even with what should be a *good* kernel, is
hopeless
Unless there were significant changes between the Natty 2.6.39-020639 RC4
kernel and the Oneiric 2.6.39-020639 kernel
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/836250
Title:
[Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor
networking, packet loss and very slow Lenovo X201 and T500 laptops
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/836250/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
