Another update -- earlier I said that the problem went away when switching to iwl3945 from ipw3945 on my Dell Inspiron 1420. Actually, with the iwl3945 version included in the latest kernel for Ubuntu 7.10, I still experienced periodic network lockups (on the order of once a week or so), just not nearly as bad. I found instructions here
on how to rebuild the linux-ubuntu-modules-2.6.22-14-generic package from source after updating the source for the mac80211 and iwlwifi packages to the latest versions. This has resolved the lockup issues but wireless still does not work after suspend or hibernate.
Another update -- earlier I said that the problem went away when switching to iwl3945 from ipw3945 on my Dell Inspiron 1420. Actually, with the iwl3945 version included in the latest kernel for Ubuntu 7.10, I still experienced periodic network lockups (on the order of once a week or so), just not nearly as bad. I found instructions here
http:// jkyamog. blogspot. com/2007/ 12/linux- install- on-hp-6910p- using-ubuntu. html
on how to rebuild the linux-ubuntu- modules- 2.6.22- 14-generic package from source after updating the source for the mac80211 and iwlwifi packages to the latest versions. This has resolved the lockup issues but wireless still does not work after suspend or hibernate.