networking & wifi disabled/fails after close laptop & system hang. (K)Ubuntu 10.4 {fixed line lengh format} [jor]

[giovanni_re]

{Sorry for the formatting on this message immediately previously posted
- my mailer made a formatting mess of that, very hard to read. I double
checked this one, & it looks formatted properly.  Please reply to this
msg, not the prior, if you have a useful thought.  Thanks. :)  }

2 Problems:
1) Close laptop (Power management system?) locks up, causing disabled
networking on reboot.
2) Unable to reenable networking.

==  Equipment & sw:
Compaq Evo N610c laptop from maybe 2003-7. 1GB, pcmcia 3com wifi using
atmel driver. Fresh KUbuntu 10.4 install.
{This had been, & continues to, run KU 9.04 fine, from another disk
partition}

==  Problem occurance:
Worked fine for several hours.  Then, while doing an ISO download I
unplugged it & closed the cover. 5 minutes later I open the cover, & the
laptop is nonresponsive, though power LED is on, & screen is
backlighted, though black. Ctrl-alt-F1, c-a-delete, c-a-backspace does
nothing. touchpad fails to cause useful display.
(Point 1: Seems like a power management system, suspend, whatever is
from the standard settings, has a bug. The laptop shouldn't hang when
the cover is closed.)

Power off, then power on & boot up.  Now networking is disabled, & I
can't find a way to enable it.

I mouse over icon of ethernet plug & socket: ¨Unmanaged¨
click on that icon: ¨Network Management disabled¨

Going to (IIRC) System settings > networking, the wifi settings are
still there, in the "wifi" section, but there is no place to turn on or
enable network management.

I insert the wifi card, and it doesn't show up under ifconfig, though it
does with iwconfig.  Strange.

==
Thoughts? Suggestions?  Thanks to you, & the great GNU(Linux) community
for the great KU10.4 sw & support. :)

===============================
=====  Here is some data for you:
{eth0 is the wifi card, which was inserted during the 10.4 install.
eth1 is the built in wired ethernet.}
{After insert the wifi card, it sees it (eth0) but fails to start the
networking properly}
:~$ tail -f /var/log/syslog
May  1 16:59:35 a polkitd[1394]: started daemon version 0.96 using
authority implementation `local' version `0.96'
May  1 17:00:32 a kernel: [  169.092178] pcmcia_socket pcmcia_socket0:
pccard: PCMCIA card inserted into slot 0
May  1 17:00:32 a kernel: [  169.092197] pcmcia_socket pcmcia_socket0:
cs: memory probe 0xa0000000-0xa0ffffff: clean.
May  1 17:00:32 a kernel: [  169.099640] pcmcia 0.0: pcmcia: registering
new device pcmcia0.0
May  1 17:00:33 a kernel: [  169.714371] eth0: Atmel at76c50x. Version
0.98. MAC 00:04:75:c4:57:e1
May  1 17:00:33 a NetworkManager:    SCPlugin-Ifupdown: devices added
(path: /sys/devices/pci0000:00/0000:00:1e.0/0000:02:06.0/0.0/net/eth0,
iface: eth0)
May  1 17:00:33 a NetworkManager:    SCPlugin-Ifupdown: device added
(path: /sys/devices/pci0000:00/0000:00:1e.0/0000:02:06.0/0.0/net/eth0,
iface: eth0): no ifupdown configuration found.
May  1 17:00:33 a NetworkManager: <info>  (eth0): driver does not
support SSID scans (scan_capa 0x00).
May  1 17:00:33 a NetworkManager: <info>  (eth0): new 802.11 WiFi device
(driver: 'atmel_cs')
May  1 17:00:33 a NetworkManager: <info>  (eth0): exported as
/org/freedesktop/NetworkManager/Devices/1

Note these apparent problematic results:
"iface: eth0): no ifupdown configuration found.
May  1 17:00:33 a NetworkManager: <info>  (eth0): driver does not
support SSID scans (scan_capa 0x00)."

===============
{Before wifi card inserted:}
ifconfig  
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:72 errors:0 dropped:0 overruns:0 frame:0
          TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:4320 (4.3 KB)  TX bytes:4320 (4.3 KB)

root@:~# iwconfig
lo        no wireless extensions.

eth1      no wireless extensions.


{After wifi card inserted: ifconfig doesn't see it, iwconfig does: eth0}
{Fails to see eth0}
root@:~# ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1                      
          RX packets:80 errors:0 dropped:0 overruns:0 frame:0            
          TX packets:80 errors:0 dropped:0 overruns:0 carrier:0          
          collisions:0 txqueuelen:0                                      
          RX bytes:4800 (4.8 KB)  TX bytes:4800 (4.8 KB)                
                                                                                       
root@:~# iwconfig                                                        
lo        no wireless extensions.                                        
                                                                                       
eth1      no wireless extensions.                                        
                                                                                       
eth0      IEEE 802.11-DS  ESSID:""                                      
          Mode:Managed  Channel:4  Access Point: FF:00:00:00:00:00      
          Bit Rate:11 Mb/s                                              
          Retry short limit:7   RTS thr:off   Fragment thr:off          
          Encryption key:off                                            
          Power Management:off                                          
          Link Quality:0  Signal level:0  Noise level:0                  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0      
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0      
                                                                       
{&, though before it did scan, now it says it cant}                
root@:~# iwlist eth0 scan
eth0      Interface doesn't support scanning : Resource temporarily
unavailable