Public bug reported:
Applies to: Ubuntu intrepid (development branch) Release 8.10
(2.6.27-7-generic)
By hangs, I mean that the screen goes all one colour (blue or black
normally), and I can’t switch to a pseudo tty, and can’t toggle num/caps
lock keys on keyboard. Requires reboot, and frequently a hard reset
(power down, wait, power-up(
Initially, the system would hang very shortly after configuring the
connection. (Good news is, that I was able to create the connection,
associate with the AP, and do limited browsing / download, before the
system would hang.)
I discovered that the hangs got a lot less when I installed the Nvidia
accelerated graphics driver (version 177) using the Hardware Drivers
wizard.
The system would not crash at all, as long as I didn’t try to configure
the network.
I later discovered that the crashing became less frequent when I
configured the router to support a wide (40MHz) wireless-N channel.
With the router supporting a single, 20MHz, channel for wireless-N, or
in B/G mode only, the server would crash quite frequently.
Configured with a wide wireless-N channel, I can now often work for an
hour or two before the system freezes. I was even able to install the
325 updates that the system reported when I first connected to the
internet.
More frequent when router is configured for single (20MHz) channel, or
BG only, than n with 20MHz channel
For me this is the one bug that matters…. Kubuntu really needs to
support at least one wireless-N PCI card (I’ll buy which ever one it
is!) very well – without crashing and with very high throughput – for me
to use the OS.
Motherboard: Asus M3N78-VM (BIOS v0702)
Chipset: Nvidia GeForce 8200 (VBIOS 62.77.2f.00.00) 512MB RAM
Memory: 4GB (2 x OCZ 2G DDR2 PC2 6400)
CPU: AMD Athlon X2 6000+ 64bit AM2 2MB
Disk: Seagate 1TB SATA II 32MB
CD: SAMSUNG 22X INTERNAL SATA DVDRW BK
Since this server is meant to do media streaming, and it’s location
doesn’t easily let me use wired Ethernet, I purchased a D-Link DWA-552
(Atheros AR5008) 802.11n PCI card. I chose this card after much
googling to determine that it is one of the most widely available and
inexpensive 802.11n cards that has a native Linux driver (ath9k).
** Affects: ubuntu
Importance: Undecided
Status: New
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802.11n (ath9k) intermittently hangs system
https://bugs.launchpad.net/bugs/285327
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