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Here are my first wireshark captures. I will need to learn more to understand the implications and to tweak my firewall, but it looks like wireshark will teach me a lot. (Understanding network...

Thanks! it looks like the standard, so I should have enough doc.

I will give wireshark a try; used etherape in the past (nice display), but did not understand the output well enough.

Ok -- thanks! I will open it to Chromecast (perhaps to its mac address, since the ip may change). I should try to monitor the polling to understand what's going on... (I'll see if I can figure out...

I have installed the app in Chrome, and streamed from there, but only a few times, and not constantly! But the blocking happens constantly...

Thanks! I will do as you suggested for Case 2: drop silently. (I googled a bit for "firewall multicast" and it looked like I would have to do some serious studying to understand multicast. Later!)
...

Since the latest update of 14.04 LTS, my ufw log has been growing in size daily. I found tons of [UFW BLOCK]s about every 20 seconds, sometimes a bit longer. Here are the main cases, case 1 and 2...

I have a IPEVO Ziggy doc camera (http://www.ipevo.com/prods/IPEVO-Ziggi-HD-USB-Document-Camera). Linux not supported!, but it sort of works. The only problem is that it is dropping frames. Here is...

I'm going to kill the encryption and see if that will localize the problem. It may take a while (my router is not cooperating); thanks so much for your help. I have a feeling this is going to be a...

TKIP seems to be a problem on ubuntu, at least in the past:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/481432

I didn't find any options to set TKIP (in the connection...

Thanks for you explanations J31!

I tried , but that was a flop: wireless would not connect. (That conf file is probably not the right place to add the option.)

iwlwifi.conf is a mystery, but I will create a /etc/modprobe.d/iwl3945.conf and put in there: options iwl3945 swcrypto=0

For the moment, this is iwlwifi.conf:



bill@bill-laptop:~$ cat...

The other mystery is the line in report that reads:

[30755.711490] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:70:de:e2:3e:c4:86:08:00 SRC=192.168.1.82 DST=224.0.0.251 LEN=32 TOS=0x00...

thanks for the suggestion; tweak had no effect (I include the wired connection speed at the end: big difference!)

after tweak and reboot:


bill@bill-laptop:~$ speedtest-cli
Retrieving...

With the firewall down (first try) it was slower; with it up, faster.... but probably just network variability. But both tests were higher than I usually get: 16 and 17 Mb/s. I think 20 would be max,...

I use both speedtest-cli and http://www.speedtest.net/ .

My wireless is pretty reliable but it runs at 10 to a maximum of 17 Mb/s. When my cellphone is attached to the network, it works consistently at 20 Mb. 10 is quite slow; my wired connection runs at...

Well, that was easy: switched to Radiance, and everything worked. Switched back to Ambiance and now everything works there too....In the meantime, I have found more themes and a mission: understand...

Thanks! (Impressive frog!) I discovered that 1) I am already at the default theme (Ambiance) and 2) some of the icons on the system settings page are missing! (Eek!) I'm wondering now whether...

I mucked around with Compiz configuration (font size problem with Google Chrome; but that's another story) and now I have borked the icons that appear in list view with Nautilus: same nondescript...

I still don't understand this, but I found a fix at http://ebb.org/bkuhn/blog/2014/06/08/volume-hotkeys-thinkpad-t60.html.

It allows the buttons to unmute the thinkpad_apci module.

I upgraded with a clean install of 14.04lts-64. When I first installed it, I got sound. Then I installed quite a few packages (most from here: ...

Final solution: replace the LCD panel. (Next step: see if I can repair the old one by replacing the bulbs)

Since my symptoms were all over the map, I thought it might be something other than the...

Nope: the adapter was plugged in and it was running fine until I touched the screen; the backlight went off.

Must be a cracked board at the plug that is only sensitive when the adapter plug is...

I will post here a log of my troubleshooting, in case others are bamboozled by a backlight problem.

The answer to 1) was gconf: http://www.ossramblings.com/set_battery_backlight_dim_amount. I set...