Ubuntu :: First Keyboard Character Gets Dropped
May 27, 2010
Have Lucid installed on an Acer laptop. With an external keyboard plugged into a USB hub, then into the laptop, I have been losing the first character typed, sometimes. Most of the time it is OK, but it happens many times in an hour. If I am typing right along, no drops. Only the first character I enter is missing. Most of the time it is firefox I am typing into, but not always. My use of this machine is largely online, so probably that is coincidental.
This problem I have never seen before Lucid - I don't remember it in the beta ether, but I didn't run that too much.Versions 9.04 and before were OK (couldn't use 9.10 for other reasons).
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Mar 27, 2010
1.What character instructd the shell to interpret a special character as an ordinary character?
2.What directory contains some of the utilities available on the system in the form of binary files?
3. What command is used to search the location of a utility?
4. What command is used to instruct the editor to write the file and quit the editor?
5. What key quits the more utility and displays the shell prompt?
6. What command starts a child shell as the super user, taking on root's identity and environment?
7. Which wildcard characters can be used for searching all the files in the system that start with "A"?
8. The user name or login name of the super user is????
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Feb 11, 2010
I'm new to linux, been using fedora 12 for about a week. I just noticed a problem with my keyboard layout. When i press the key with the backslash and pipe character, i get < for backslash and > for the pipe character. I have tried the following to fix the problem:
1.$ gnome-keyboard-properties then selected the proper keyboard model (Asus Laptop) tried adding different keyboard layouts and setting them as default nothing i did there made any difference.I am currently using USA, i have tried Canada English, USA international, and more I noticed that even when i change it to something like Afganistan, there is no noticable different when i type in the test area. I notice that there are keyboard layouts that have < and > where the backslash and pipe character should be, but the picture for USA shows the pipe and backslash where they should be.
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Feb 18, 2011
How do I compose the character on a US QWERTY keyboard?
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Mar 9, 2010
How can I change the third level of the 1 (one) key to umlauted a using German Dvorak layout?
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Jun 12, 2011
I was messing around with the alternate character panel app and made a custom character set. I then wanted to put it on a new panel and created a new panel. I moved the character set to that panel, and then started to mess around with the panel settings (auto hide, show hide buttons, and expand, to be specific.) So far so good, until I moved the panel from the right side of the screen to the top. I already had a panel here, and it seemed not to like hiding a panel when there was already one on the top.
When the new panel hid itself, all my panels stopped responding (any clicks on them did nothing) and my processor started going at 100%. I tried a reboot and the only thing that changed is that now I can't even see my panels. I'm guessing I need to change the settings back manually through the prompt, but I don't know how to do that. I am using 10.04 and have not upgraded gnome since upgrading to 10.04.
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Oct 1, 2010
My wireless connection keeps getting dropped very frequently. I am on a Dell XPS m1530 and I will just be on the interent and it just disconnects from wireless and I have to connect back. It is super annoying. I am on the latest version of ubuntu.
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Oct 11, 2010
my laptop running 10.10 and a dell. the college is witch i attend's unsecured wireless network keep disconnecting me from every on average 45 minutes to an hour ands will not re connect for about 10-15 minutes. it works fine anywhere else i go but here i get dropped.
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Mar 13, 2010
I am using ubuntu 9.10. Configuring my firewall using guarddog. I have setup a rule to allow traffic OUT on port 7078 UDP, and just because i'm having problems i added an IN rule.
# Create the filter chains
# Create chain to filter traffic going from 'Internet' to 'Local'
ipchains -N f0to1
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Mar 19, 2010
I just purchased a shiny new LG 10x BD-ROM Combo drive. I installed it without problems. The rest of my system consists of:
MSI k9a2 platinum mobo
AMD Phenom 9950
3x SATA HDD
nvidia gtx260
That's probably everything pertinent. I have the SATA HDDs installed on SATA ports 1, 3, 4 (not the promise slots, 5 & 6), and the BD-ROM installed on SATA 2. I don't think that's an issue, though. I did replace a working sony opiartic (sp?) DVD-RW, so I don't suspect any cable issues (for that and for other reasons).
note: "restart" = "reboot via restart", as opposed to power down & turn back on.
1. I turn on the power. BIOS posts that it sees the BD-ROM in the SATA 2 spot.
2. I boot into Ubuntu 9.10 (updated with the latest x.20 kernel). It does take a little longer than usual to load between the grub menu and the login.
3. After login, the device shows up as cdrom0 in the "Places" menu. Clicking on it returns an error whether a disc is in the drive or not. At this point, however, the open/close button on the drive no longer works. Its as if it's lost all power or connection or something.
4. When I restart, BIOS hangs a while while posting. It shows only devices on SATA ports 1, 3, & 4. It's as if the BD-ROM doesn't exist anymore.
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lspci and lspci -vvnn show nothing... well, technically they show everything BUT the drive. I'm planning on purchasing a second BD-ROM (different manufacturer, if I can help it), to test later, but I don't have high hopes. It could be a motherboard issue, I suppose, but updating the BIOS from 1.4 to the latest version (1.9) solved nothing. I don't suspect it's the hardware, though, since it works fine in Win7. I imagine that the culprit is linux/ubuntu, and I need some help figuring out if this is a fixable problem. I've been really, really happy with Ubuntu and linux in general. Ubuntu is my primary OS, with Win7 as my backup in case of emergencies, but I'm seriously considering wiping linux & using Win7 exclusively altogether with this severe hardware issue.
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Jul 11, 2010
I've been using my current laptop since Ubuntu Edgy Eft and, since then, I never had any problem with wireless ( Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) ) Since I upgraded to Lucid, my connection is dropped approximately every 3-4 minutes for 10s. Network-manager doesn't show anything but it is well visible with the netspeed applet that shows a warning sign "No connection" instead of the speed.This is very annoying and frustrating. I recall having seen the same issue in an blog article where the author was talking about his upgrade to lucid. It was just one line and I didn't care a lot at the time and cannot find the article back.
Is there anyone having heard about a possible issue ? (I've upgraded from Karmic when Lucid was still in Beta, so it might be the cause).
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Nov 21, 2010
I was living peacefully with 10.04, till I upgraded to 10.10. The upgrade was smooth except for the ATI driver.Now I have no driver (nothing at System>Admin>Additional Drivers)glxgears does not exceed 60 fps. Life is too slow.Using synaptic, I installed fglrx, this broke everything!glxgears now gives segmentation fault. Booting is not graphical anymore, but rather a low-resolution `Ubuntu 10.10' big-font text.Can any1 help me install the correct ATI driver (if any) and get rid of the corrupted fglrx synaptic driver?
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Dec 30, 2010
Ubuntu 10.10, Firefox 3.6.13, IceTea6 ext, Greasemonkey, Firebug, FlashBug.. Everything was going just great, then poof. Firefox seems to have lost the ability to interpret java and javascript extensions. It's strange, I have a javascript extension that I've used a lot in the last 2 to 3 months. One night, was using- refreshed, gone.
Script was still there in GreaseMonkey, with all it's pointers to the web presence. I have Google Chrome with the same extension and it stiill works fine. Thought maybe it might be an install problem, so uninstalled/reinstalled Greasemonkey and the script//no change. Uninstalled and reinstalled Firefox and extensions//no change.
I used Firebug to inspect element on a familiar web page where I inserted a table with imbedded javascript. doesn't execute any of the onclick processes on it. This table "is" something that I have inserted on that same page previously with no problems and it executed those same onclick processes fine.
Which leads me to believe that somehow, in the past few weeks, I somehow lost the abilty to process java and javascript. Could this be to soem recent updates or upstream changes? Note-- I do have Eclipse IDE, JavaBeans IDE and Monkey Studio IDE installed on this instance of Ubuntu. I've stayed with Ubuntu's flavor of the OpenJDK, instead of going to Sun's JRE in an attempt to stay open to future shifts and directions.
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Jul 4, 2011
I'm working right now with ubuntu 11.04 on my asus ul30vt-x1, my wireless n network is working on a linksys e3000 router, my issue is basically with long file transfers. When the issue started i was reaching speeds of 100 Mbps through my wireless network even when I'm connected at 150 Mbps. However when at this speed, I don't know why, the connection is dropped after some minutes or even seconds. I made some testing on windows, I'm reaching 70 Mbps there and no problem at all with dropping the connection.
So my conclusion is that for some reason the linux driver, in my case, is not able to handle such speed of 100 Mbps. I know that a wireless network will have a throughput of aprox 60% the wireless speed. Right now im trying to apply traffic shapping to my transfers so i can get 70 to 80 Mbps, its being working so far.
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Jun 13, 2010
I just dropped my laptop while it was on. It is a dual boot vista and Ubuntu machine (9.04) and Ubuntu was running at the time. The machine didn't go down and after I got done using it I shut it down normally. Now it will not come back up because grub is saying there is something wrong with the disk geometry. It did give me a command line, I forgot the exact error message but I can look it up if needed.
I tried plugging the hard drive into a different machine under a live cd but everything was in the lost and found folder (80 GB) and the folder was unreadable. I backed up the windows partition successfully using windows explorer and now have been looking at testdisk and Stellar Phoenix Linux Data Recovery ($80) for the Linux partition. I don't know if it is ext3 or ext4, I may have bumped it up to ext4 from the default ext3 during the install. Also a few files on the windows partition were unreadable, so the disk definitely has some physical damage. I'm getting a new one along with a back up system for sure after all this is over.
I got tired of figuring out testdisk so I let the paid app run its free test overnight to see if I could recovery anything before I bought it, but it got hung up on a sector halfway through.
Going forward I think I will try Photorec next and then testdisk again if that doesn't work. Does Photorec get almost all the normal office (doc xls), music (mp3) and video files (mp4) not just pictures?
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Aug 9, 2010
I'm getting dropped frames from both Digital8 & MiniDV camcorders using Kino. MyCPU doesn't seem to be spiking. I've made sure compiz is disabled and no memory/cpu hungry apps are running. I'm using SATA drives so DMA shouldn't be the issue.
The video and audio that is captured seems to be fine.
Hardware info:
CPU - AMD 64 FX-55 Processor
Mobo - GA-K8NXP-SLI
01:07.0 FireWire (IEEE 1394): Texas Instruments TSB12LV23 IEEE-1394 Controller
01:0a.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link Layer Controller (rev 01)
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Oct 1, 2010
One of our RHEL 5.3 servers has trouble about 30% of the time with TCP-based communications, but it does not seem to be firewall issues. From another computer on the same switch, you can SSH to the server sometimes and other times the SSH command will just hang. When it hangs, you can often just Ctrl+C and try it again and it works. Same with HTTP connections. You'll get part of a web page and then FireFox will just hang waiting for the rest and eventually time out. Same goes for communication initiated FROM the server. SSH'ing from the server to any outside server or connecting to any web site works sometimes, but most times not. iptables if off. No other firewalls are running. Tcpdump shows communication gets so far and then stops. It does not matter whether tou run tcpdump on that server or the client connecting to it. Either way you see the connection stops working. MEANWHILE, pinging with small or large packets works flawlessly. 10,000 packets, zero drops.
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Jan 11, 2010
I've recently installed Ubunter 9.10 Server Edition to use as a NAT firewall for the lab I run. I'm using iptables to do NAT forwarding and everything works great except that, occasionally, connections seem to break. Ssh connections close with "Connection reset by peer" and HTTP connections just stall out.I believe this has to do with the firewall's internal network interface occasionally dropping packets.
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Feb 13, 2009
I have question regarding netstat? When performing a "netstat -s" I receive the following information regarding dropped packets under IP:
IP:
93978695 total packets received
0 forwarded
0 incoming packets discarded
79472157 incoming packets delivered
65235033 requests sent out
29527 outgoing packets dropped
However if I run a "netstat -i" I have no dropped packets whatsoever: (apologies for the table format):
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
bond0 1500 0 34326528 0 0 0 72755307 0 0 0 BMmRU
bond0:1 1500 0 - no statistics available - BMmRU
bond1 1500 0 28605491 0 0 0 20948952 0 0 0 BMmRU
eth0 1500 0 34199550 0 0 0 72755278 0 0 0 BMsRU
eth1 1500 0 126978 0 0 0 29 0 0 0 BMsRU
eth2 1500 0 97911 0 0 0 1 0 0 0 BMsRU
eth3 1500 0 28507580 0 0 0 20948951 0 0 0 BMsRU
lo 16436 0 34094225 0 0 0 34094225 0 0 0 LRU
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Mar 30, 2011
We do NOT support samba on our Unbuntu servers but still zillions of windows machines are constantly trying to connect on the SMB ports. I've added a rule that drops access to destination ports 137-138 and that seems to work. But it creates many many log entries documenting that the packet has been dropped. I've been researching and cannot come up with a way to suppress logging for these drops.
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Apr 25, 2011
I recently tried to upgrade my Slackware server's sendmail software from 8.14.3 to 8.14.4 and ran into a problem. In a nutshell all outbound non local mail is routed through a smart host requiring authentication. As a result I use a modified version of the "sendmail-slackware-tls-sasl-clamav.mc" to build the sendmail.cf. However, when I tried to run sendmail 8.14.4 with my newly created sendmail.cf I was greeted with the following.
Warning: Option: AuthMechanisms requires SASL support (-DSASL)
Warning: Option: AuthOptions requires SASL support (-DSASL)
Warning: Option: CACertPath requires TLS support
Warning: Option: CACertFile requires TLS support
[Code]....
Apparently SSLv2 is now considered weak and the directive is a good idea, but at present this directive is not supported by the sendmail in this package.
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Feb 28, 2010
with my other ethernet card problem solved, I suddenly run into this:
Code:
eth1
Link encap:Ethernet HWaddr 00:02:e3:16:37:4c
inet addr:10.0.2.1 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::202:e3ff:fe16:374c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
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This card was working perfectly fine up until....an hour ago and it started doing this. My iptables isn't blocking it somehow, because I didn't change anything. I tried reverting to an older kernel and that didn't help. It's not the network cable, it works fine in any other card. Also, the dropped packets seem to count down? It seems to go down by exactly one every time I run ifconfig, no matter the length of time in between running it.
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Nov 17, 2010
Have logitech camera, seems to be detected initially, but dropped later for some reason.
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May 23, 2011
when I change the hostname on my Ubuntu server, the DHCP clients table in my router is dropped.I'm running 32-bit Ubuntu Server 10.10. My router is a Linksys WRT54GL with firmware version 4.30.15. I'm changing the hostname by modifying /etc/hosts and /etc/hostname. I've also tried changing the hostname using the Linux hostname command in a terminal, but this does not seem to behave correctly according to the manpages (it does not actually change the hostname, or update either of the aforementioned files).
I've also tried using a different router - a Linksys BEFSR41 - but the DHCP table is still dropped when I change the hostname on my server (although this router is not all that different from my other one).
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May 18, 2010
I'm new to Debian and I have just installed it on three machines. To begin with they checked about 60 or so repos when doing an update. Then quite quickly this dropped to 48. I have removed the DVD media from the sources list after installation but that was before I saw this drop. It happened after an update as far as I can tell. I didn't think anything of it at the time. By the time all three were set up they were all only checking 48 repos. However I also have a VM, for trying out new stuff, and whilst that has been updated it still remains at about 60 (currently 59).
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Mar 24, 2010
in KDE:Factory:Desktop you can find a new version of kupdateapplet. In the changes you can find the following:
- dropped zypp plugin (bnc: 590192)
- V 0.9.11
I have no access to 590192 in bugzilla, so can anybody tell me why the only real working backend is dropped? The PackageKit-Backend is not showing the updates from 3rd-party-repositories (packman or obs). Is there any possibility to get back the working 0.9.10?
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Mar 17, 2011
I've forwarded incoming connections on port 25 to my virtual machine with the following commands:
sudo iptables -t nat -A PREROUTING -p tcp -i eth0 -d 10.1.1.3 --dport 25 -j DNAT --to 192.168.56.101:25
sudo iptables -A FORWARD -p tcp -i eth0 -d 192.168.56.101 --dport 25 -j ACCEPT
The strange thing is the connections coming through in the virtual machine seem to be getting dropped. A port scan from the internet says the port is closed, but it is not the case as I can see the connection coming through. As you've probably worked out, I am running a mail server. When I send myself test mail, the connections from the senders mail server also gets dropped.
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Dec 5, 2010
I've run into a of a routing issue pertaining to packets leaving a firewall, traversing and IPSec tunnel, hitting the target and then returning via a different tunnel, finally arriving back on the source firewall but on a different interface from where it started. Once the packet has returned to the firewall it is dropped I've been unable to discover the reason for the drop. Two sides to the system, Firewall A and Firewall B. Each firewall provides the default gateway to its respective side and offers a backup IPSec tunnel to the high capacity tunnel handled internally. The Layer 3 Switch uses OSPF and takes care of the bulk of the behind the scenes routing between the sides. In case of failure the Layer 3 switches direct traffic to use the Firewall tunnels to route traffic.
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Apr 4, 2011
I'm running a Debian Squeeze 6.0.1a box that's connected to my ISP via an L2TP connection that's managed by OpenL2TPD. The box is configured to perform NAT from local clients (on eth0) to the internet (on ppp0).
However, I'm having an issue with TCP packets that are sent from the box itself to the internet (packets originally coming from the local clients get sent and received over the internet just fine)
I'm using this Python app to test this:
Code:
#!/usr/bin/env python
import socket, time
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 5003))
s.listen(1)
while 1:
conn, addr = s.accept()
[Code]...
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Oct 18, 2010
I am trying to figure out what command to use to show the number of DROPPED and INVALID packets that the firewall is handling.I'm going to put these commands into a log analyzer script which will run every 15 minutes with cron. The firewall is running and operating the way I want it to. I'm running CentOS 5.4.
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