January 2013 - luv-main

Fan maintence in PC's
by zlinw＠mcmedia.com.au 10 Jan '13

10 Jan '13

I am posting this in luv-main as as far as I am concerend this is an issue of critcal importance. I have found over the years fans (usually sleeve bearing) will eventauall get noisy. For some time like most people I simply purchased new fans, I have found though that most sleeve bearing fans can be lubricated greatly extending there life. I am posting this at this time as I have found over the years they usually become noisy around this time of year. I in fact have just done a couple yesterday. The procedure is to get access to the fan, place it horizontally with the actaul fan down. Under the label in the centre is a depression around 7 to 8 mm dia, this has the fans thrust bearing in it. A couple of drops of machine oil, making sure one does not get any oil out side the bearing is all that is required. To reseal for most fans I use a square of insulation tape. I have a number of 80mm fans still going well after 10 years using this procedure. Now if one has some Thermaltake fans one job is good deal easier is these have a rubber plug over the bearing (under the label). In this case one carefully removes the plug with a sharp implement making sure not to damage it, a couple of drops of machine oil and replace the plug. It may take some hours for the fans to become completely silent again, the longest time so far has been around 5 or 6 hours. I have been doing this now for at least 8 or 9 years with only a single failure, even then I did not give the fan enough time for the oil to penitrate. IMPORTANT Note, Do __NOT__, I repeat do __NOT__ use motor oil, this oil WILL gum and eventuall sieze the fan. I use sewing machine oil avaible from most supermarkets. If a fan is difficult to access, eg the drive bay fan in a Thermaltake Xaser6 case I usually replace such fans with either a ball or lately maglev bearing fans. Hope this will be of some use, Lindsay

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Re: Network connectivity Ubuntu 12.04
by stripes theotoky 09 Jan '13

09 Jan '13

Hi Steve, read https://help.ubuntu.com/community/UFW as it may give some insight > That is going to help a lot. I didn't know that UFW was running on this box. I thought it was just protected by the University firewall. I have disabled it and will see if the network stays up. Assuming it does I will start looking around in the rules to try to find out what was happening and once that is sorted will re-enable it. Stripes. > > Steve > > > On 01/09/2013 08:13 PM, stripes theotoky wrote: > >> Just got back to work to find the network frozen again so ran the >> following >> tests >> >> host seems as if DNS is working and I can't run tcptraceroute because >> right >> now the network is behaving but have installed it and will run it the next >> time the network freezes. >> >> Stripes >> >> Is there anything odd appearing in dmesg? >> >>> >>> >> dmesg looks weird to me but I don't know enough to know what it is >> trying >> to tell me. >> >> [96377.098569] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=1726 DF PROTO=TCP >> SPT=10002 DPT=38193 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96397.271477] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=1878 DF PROTO=TCP >> SPT=10002 DPT=58486 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96417.093354] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=2022 DF PROTO=TCP >> SPT=10002 DPT=40273 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96436.994151] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=40 TOS=0x00 PREC=0x00 TTL=125 ID=2170 DF PROTO=TCP >> SPT=10002 DPT=52514 WINDOW=0 RES=0x00 RST URGP=0 >> [96457.439909] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=2338 DF PROTO=TCP >> SPT=10002 DPT=49735 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96477.278106] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=2492 DF PROTO=TCP >> SPT=10002 DPT=39062 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96497.097806] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=2642 DF PROTO=TCP >> SPT=10002 DPT=63464 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96517.264219] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=2801 DF PROTO=TCP >> SPT=10002 DPT=41087 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96537.157160] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=40 TOS=0x00 PREC=0x00 TTL=125 ID=2981 DF PROTO=TCP >> SPT=10002 DPT=58972 WINDOW=0 RES=0x00 RST URGP=0 >> [96557.000166] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=3124 DF PROTO=TCP >> SPT=10002 DPT=51388 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96577.021152] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=56 TOS=0x00 PREC=0x00 TTL=125 ID=3283 DF PROTO=TCP >> SPT=10002 DPT=34476 WINDOW=65535 RES=0x00 ACK SYN URGP=0 >> [96597.425777] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=3437 DF PROTO=TCP >> SPT=10002 DPT=38699 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96617.245539] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=3582 DF PROTO=TCP >> SPT=10002 DPT=40359 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96637.036939] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=3732 DF PROTO=TCP >> SPT=10002 DPT=54144 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [96657.206130] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**0f:ed:ee:c0:08:00 SRC=131.172.8.83 >> DST=131.172.182.35 LEN=60 TOS=0x00 PREC=0x00 TTL=125 ID=3884 DF PROTO=TCP >> SPT=10002 DPT=37665 WINDOW=8192 RES=0x00 ACK SYN URGP=0 >> [97797.065193] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**df:5b:b6:40:08:00 SRC=69.175.126.170 >> DST=131.172.182.35 LEN=74 TOS=0x00 PREC=0x00 TTL=46 ID=0 DF PROTO=UDP >> SPT=40369 DPT=5353 LEN=54 >> [102387.437169] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**df:5b:b6:40:08:00 SRC=213.131.66.37 >> DST=131.172.182.35 LEN=44 TOS=0x00 PREC=0x00 TTL=41 ID=0 DF PROTO=ICMP >> TYPE=8 CODE=0 ID=4396 SEQ=256 >> [107008.373813] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**df:5b:b6:40:08:00 SRC=10.11.250.1 >> DST=131.172.182.35 LEN=61 TOS=0x00 PREC=0x00 TTL=125 ID=19923 PROTO=ICMP >> TYPE=8 CODE=0 ID=289 SEQ=18360 >> [107228.020982] [UFW BLOCK] IN=eth0 OUT= >> MAC=84:2b:2b:b4:ee:09:00:17:**df:5b:b6:40:08:00 SRC=101.44.1.135 >> DST=131.172.182.35 LEN=48 TOS=0x00 PREC=0x00 TTL=103 ID=38101 PROTO=TCP >> SPT=276 DPT=22 WINDOW=65535 RES=0x00 SYN URGP=0 >> >> >> >> >> When it's not working what does this command say? >>> >>> host google.com >>> >>> >> host seems as if DNS is working >> >> host google.com >> >> google.com has address 74.125.237.6 >> google.com has address 74.125.237.7 >> google.com has address 74.125.237.8 >> google.com has address 74.125.237.9 >> google.com has address 74.125.237.14 >> google.com has address 74.125.237.0 >> google.com has address 74.125.237.1 >> google.com has address 74.125.237.2 >> google.com has address 74.125.237.3 >> google.com has address 74.125.237.4 >> google.com has address 74.125.237.5 >> google.com has IPv6 address 2404:6800:4006:800::1005 >> google.com mail is handled by 10 aspmx.l.google.com. >> google.com mail is handled by 20 alt1.aspmx.l.google.com. >> google.com mail is handled by 30 alt2.aspmx.l.google.com. >> google.com mail is handled by 40 alt3.aspmx.l.google.com. >> google.com mail is handled by 50 alt4.aspmx.l.google.com. >> >> That'll say whether DNS is affected (or not). >> >>> >>> >> >> Can you install tcptraceroute and then when your connection is not >> >>> working can you also try: >>> >>> sudo tcptraceroute -n 74.125.237.142 >>> >>> >> sudo tcptraceroute -n 74.125.237.142 >> Selected device eth0, address 131.172.182.35, port 43046 for outgoing >> packets >> Tracing the path to 74.125.237.142 on TCP port 80 (http), 30 hops max >> 1 131.172.182.251 0.267 ms 0.215 ms 0.216 ms >> 2 * * * >> 3 * * * >> 4 * * * >> 5 * * * >> 6 * * * >> 7 * * * >> 8 * * * >> 9 * * * >> 10 * * * >> 11 * * * >> 12 * * * >> 13 * * * >> 14 * * * >> 15 * * * >> 16 * * * >> 17 * * * >> 18 * * * >> 19 * * * >> 20 * * * >> 21 * * * >> 22 * * * >> 23 * * * >> 24 * * * >> 25 * * * >> 26 * * * >> 27 * * * >> 28 * * * >> 29 * * * >> 30 * * * >> Destination not reached >> >> >> to see what's going on with a TCP connection to Google? >>> >>> >> Thanks >> Stripes >> >> >> >>> cheers, >>> Chris >>> -- >>> Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC >>> ______________________________**_________________ >>> luv-main mailing list >>> luv-main(a)luv.asn.au >>> http://lists.luv.asn.au/**listinfo/luv-main<http://lists.luv.asn.au/listinfo/luv-main> >>> >>> >> >> >> ______________________________**_________________ >> luv-main mailing list >> luv-main(a)luv.asn.au >> http://lists.luv.asn.au/**listinfo/luv-main<http://lists.luv.asn.au/listinfo/luv-main> >> >>

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Re: Network connectivity Ubuntu 12.04
by stripes theotoky 09 Jan '13

09 Jan '13

Hi Daniel, When your firefox is hanging: > > Can you ping a host? eg: www.latrobe.edu.au? > ping google.com PING google.com (74.125.237.1) 56(84) bytes of data. 64 bytes from syd01s04-in-f1.1e100.net (74.125.237.1): icmp_req=1 ttl=51 time=15.4 ms 64 bytes from syd01s04-in-f1.1e100.net (74.125.237.1): icmp_req=2 ttl=51 time=13.9 ms 64 bytes from syd01s04-in-f1.1e100.net (74.125.237.1): icmp_req=3 ttl=51 time=14.0 ms Can you ping the gateway? route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 131.172.182.250 0.0.0.0 UG 0 0 0 eth0 131.172.182.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 ping 131.172.182.250 PING 131.172.182.250 (131.172.182.250) 56(84) bytes of data. 64 bytes from 131.172.182.250: icmp_req=1 ttl=255 time=0.362 ms 64 bytes from 131.172.182.250: icmp_req=2 ttl=255 time=0.353 ms 64 bytes from 131.172.182.250: icmp_req=3 ttl=255 time=0.357 ms 64 bytes from 131.172.182.250: icmp_req=4 ttl=255 time=0.360 ms Can you ping your network interface (eth0) ping localhost PING localhost.localdomain (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=1 ttl=64 time=0.028 ms 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=2 ttl=64 time=0.021 ms 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=3 ttl=64 time=0.017 ms 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=4 ttl=64 time=0.020 ms 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=5 ttl=64 time=0.028 ms 64 bytes from localhost.localdomain (127.0.0.1): icmp_req=6 ttl=64 time=0.022 ms Can you work out how far out you can go? with ping it appears I can go world wide. It is all very odd. Regards Stripes On 09/01/13 16:02, stripes theotoky wrote: > Hi, > > I am running Ubuntu 12.04 on a Dell Optiplex 780. It used to work fine > network connectivity no problems with previous versions of Ubuntu but now > accessing the web is almost impossible in the last hour I have had to drop > and reestablish the connection to the network about 15 times. In fact just > about every time I click on a link Firefox just sits there churning away > trying to connect and getting nowhere for as long as I care to leave it > trying. > > I have a wired connection via a University LAN. If I disconnect then > reconnect then reload the page it is there almost instantly. > > It doesn't appear to be a Firefox problem as I get similar with aptitude > from the comment line and Chromium. > > It doesn't seem to be a network problem as other computers plugged into > the network connect and remain stable. > > The only weirdness that seems to be from the network is the proxies > sometimes it ONLY works with auto detect sometimes it only works with > manual and this can vary several times throughout the day. > > My best guess is something screwy in Ubuntu or a network cable going bad. > I have a new cable on order to eliminate that any ideas what else it could > be? > > Stripes. > > > _______________________________________________ > luv-main mailing listluv-main@luv.asn.auhttp://lists.luv.asn.au/listinfo/luv-main > > >

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Network connectivity Ubuntu 12.04
by stripes theotoky 09 Jan '13

09 Jan '13

Hi, I am running Ubuntu 12.04 on a Dell Optiplex 780. It used to work fine network connectivity no problems with previous versions of Ubuntu but now accessing the web is almost impossible in the last hour I have had to drop and reestablish the connection to the network about 15 times. In fact just about every time I click on a link Firefox just sits there churning away trying to connect and getting nowhere for as long as I care to leave it trying. I have a wired connection via a University LAN. If I disconnect then reconnect then reload the page it is there almost instantly. It doesn't appear to be a Firefox problem as I get similar with aptitude from the comment line and Chromium. It doesn't seem to be a network problem as other computers plugged into the network connect and remain stable. The only weirdness that seems to be from the network is the proxies sometimes it ONLY works with auto detect sometimes it only works with manual and this can vary several times throughout the day. My best guess is something screwy in Ubuntu or a network cable going bad. I have a new cable on order to eliminate that any ideas what else it could be? Stripes.

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Android keyboard to Linux
by Toby Corkindale 09 Jan '13

09 Jan '13

Hi, Is anyone aware of an app that will let you type on an Android device's on-screen keyboard and send the keystrokes to a Linux box via an HID device? (ie. So X etc sees the input.) Thanks, Toby

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Fwd: [OWOOT] Do you want a free ticket to DrupalCon Sydney (Feb 6 to 9)?
by Bianca Gibson 09 Jan '13

09 Jan '13

---------- Forwarded message ---------- From: "Mary Gardiner" <mary(a)puzzling.org> Date: 9 Jan 2013 12:51 Subject: [OWOOT] Do you want a free ticket to DrupalCon Sydney (Feb 6 to 9)? To: "Oceania Women of Open Tech" <owoot(a)lists.owoot.org> Cc: Linux Australia is giving one away. You need to apply for it by TOMORROW (Thu Jan 10). See http://lists.linux.org.au/pipermail/linux-aus/2013-January/020311.html for how to apply. -Mary _______________________________________________ owoot mailing list owoot(a)lists.owoot.org http://lists.owoot.org/listinfo/owoot

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uefi and pxe warning (nothing to do with secureboot)
by Craig Sanders 08 Jan '13

08 Jan '13

tl;dr version: this is just a heads-up for those, like me, who install machines using PXE rather than USB sticks or CDROM. UEFI is going to make this a PITA until there's a EFI compatible ipxe or gpxelinux.0 and syslinux. This is entirely unrelated to secureboot/restricted boot, it's just an added complication. the story so far: I just bought a new notebook a few days ago to take to linuxconf, an asus x401u. it's nothing special, i just wanted a cheap xterm & ssh terminal. anyway, rather than blow it away completely and just install debian, I decided to use gparted to shrink the win7 partition and set it up for dual boot. most of that procedure went perfectly smoothly - pxeboot clonezilla to backup its pristine original condition (so i had something to revert to if i screwed up), pxeboot gparted, reboot, then pxeboot debian installer. debian installed w/o a problem until i got to the point of installing grub. The disk has a GPT partition table, and the system is configured for UEFI boot. Apparently Win7 needs UEFI in order to boot from a GPT disk. The latest debian installer fully supports installing to GPT on UEFI systems - the catch is that to load the efivars kernel module (needed so that grub-efi-amd64 and efibootmgr can update the efi boot table), you have to have booted a UEFI boot-loader. Fortunately, the BIOS has an option to enable UEFI network stack, which can then do a tftp boot. so far, so good. Unfortunately, unidonly.kpxe from the ipxe package is not efi compatible. nor is gpxelinux.0 from syslinux. and AFAIK, there aren't any. and none of the syslinux tools like menu.c32 or chain.c32 are efi-compatible (apparently there is an alpha-quality syslinux 6.x series which will be efi) What this means is that (currently) you can't use PXE to install linux on a UEFI system. your only option is to use a USB stick or CD-ROM, and even then only if you can make the system use UEFI to boot from it. (well, you can install linux, you just can't boot it afterwards) this, to put it mildly, sucks. anyway, i've finally made myself a debian live (wheezy) bootable usb stick, and i'm about to try booting and chrooting to get grub installed so i can finally boot linux from the hard disk. craig ps: i kind of wish i had just given up on making it dual boot. i could have disabled UEFI entirely and had far less problems, and i'm not sure i even have any use for the windows partition except maybe for some low-end games. -- craig sanders <cas(a)taz.net.au>

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SSDs extending the life of & IBM Racetrack memory
by Andrew McGlashan 07 Jan '13

07 Jan '13

Hi, On the subject of SSDs I posted on this g+ post about IBM racetrack memory and SSD advances we'll see down the track; hopefully both not to far away..... https://plus.google.com/107532714495314593816/posts/HwNYkoGrxYM Cheers A.

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Re: New Motherboard/System Selection
by Andrew Voumard 05 Jan '13

05 Jan '13

Hi Bianca, I have tried USB adapters, but this mouse has a specialcustom protocol & drivers & it just won't work with the (various) adapters I have tried. Thanks Andrew At 09:52 AM 5/01/2013, Bianca Gibson wrote: >Hi Andrew, >On 5 Jan 2013 09:22, "Andrew Voumard" ><<mailto:andrewv@melbpc.org.au>andrewv(a)melbpc.org.au> wrote: > > > 7. Either a PS/2 mouse port or 9 Serial port is essential (for the > > special mouse I use) - either onboard or via a PCI/e expansion > board are ok. > >Have you looked for a USB adapter for either of those? That would >probably give you more options. > >Cheers, >Bianca >_______________________________________________ >luv-main mailing list >luv-main(a)luv.asn.au >http://lists.luv.asn.au/listinfo/luv-main

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Ubuntu OS Phone with video link about download in next couple of weeks for Google Nexus devices
by Andrew McGlashan 05 Jan '13

05 Jan '13

Hi, This looks very promising, what do others here think? https://www.youtube.com/watch?v=kXWnMTm7We8#t=1m08s "Canonical promise that they'll have the images for you to download and install on your Galaxy Nexus within the next couple of weeks..." Ubuntu is working on a base of the Google Nexus device and the GN port will be available for anyone to use very soon. Ubuntu's "own" hardware will follow later, but anybody whom wants to be involved, can be ... soon. Engadget did a video with Mark Shuttleworth: Ubuntu On A Galaxy Nexus - Engadget Hands On Review https://www.youtube.com/watch?v=sLtcj7FdIYA XDA has even got a new forum area just for Ubuntu OS phone. http://forum.xda-developers.com/showthread.php?p=36190363 Ubuntu will also be taking phones to CES and talking with people there too, not that I'll be there... ;) Ubuntu's own site (they have their own longer video): http://www.ubuntu.com/devices/phone Cheers -- Kind Regards AndrewM Andrew McGlashan Broadband Solutions now including VoIP Current Land Line No: 03 9012 2102 Mobile: 04 2574 1827 Fax: 03 9012 2178 National No: 1300 85 3804 Affinity Vision Australia Pty Ltd http://affinityvision.com.au http://securemywireless.com.au http://adsl2choice.net.au In Case of Emergency -- http://affinityvision.com.au/ice.html

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