After rebooting, NetworkManager all of the sudden has stopped working. Its icon appeared in the tray, then disappeared, then appeared again and so on 3-4 times.
All my config files are correct, I simply haven't changed anything.
I found this https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1489154
However, it seems overcomplicated.
I have internet connection now, though, via wpa_supplicant.
So what do I do to fix it?
I'd like to disable/remove autoupdate for the certain packages in a repository. In particular, I want this package to stop autoupdating:
I just don't want to install it. Is it possible to prevent it from appearing each time I boot my comp?
That can happen after a few seconds like many people have described, or after a few minutes or hours. The display remains turned off, only when I press keyboard or move the mouse it gets turned on.
What can be the reason?
I'm using a bluetooth mouse, maybe it gets connected to it when it's asleep because I put them in a bag close to each other? However, I think even if it is, it's not the only reason.'
UPDATE:
$ cat /proc/acpi/wakeup
Device S-state Status Sysfs node
LID S3 *enabled platform:PNP0C0D:00
IGBE S4 *enabled pci:0000:00:19.0
EXP3 S4 *disabled pci:0000:00:1c.2
XHCI S3 *enabled pci:0000:00:14.0
EHC1 S3 *enabled pci:0000:00:1d.0
What should I disable to allow waking up only by pressing a key on the keyboard?
I got a computer with Windows 10. After installing Ubuntu along Windows 10 and fixing the boot sector with boot-repair, I ended up with this for the 1st time:
It does work when I choose the 1st or 2nd last ones. But how to delete all those redundant items?
Why does these 2 return different output, although they're both services?
$ sudo service cassandra status
* Cassandra is not running
$ sudo service mongod status
mongod stop/waiting
$ service --status-all
[ - ] cassandra
[ + ] mongod
And why does the 3rd output says mongod is actually running ([ + ])?
Following these instructions http://docs.mongodb.org/master/tutorial/install-mongodb-on-ubuntu/ of how to install mongodb, I got an error:
$ sudo apt-get install mongodb-org
[sudo] password for alex:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libjpeg62 python-colorama python-distlib python-html5lib
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools
The following NEW packages will be installed:
mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell
mongodb-org-tools
0 upgraded, 5 newly installed, 0 to remove and 15 not upgraded.
Need to get 50.7 MB of archives.
After this operation, 157 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
WARNING: The following packages cannot be authenticated!
mongodb-org-shell mongodb-org-server mongodb-org-mongos mongodb-org-tools
mongodb-org
Install these packages without verification? [y/N] y
Err http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.0/multiverse mongodb-org-shell amd64 3.0.5
407 Proxy Authentication Required
Err http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.0/multiverse mongodb-org-server amd64 3.0.5
407 Proxy Authentication Required
Err http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.0/multiverse mongodb-org-mongos amd64 3.0.5
407 Proxy Authentication Required
Err http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.0/multiverse mongodb-org-tools amd64 3.0.5
407 Proxy Authentication Required
Err http://repo.mongodb.org/apt/ubuntu/ trusty/mongodb-org/3.0/multiverse mongodb-org amd64 3.0.5
407 Proxy Authentication Required
E: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.0/multiverse/binary-amd64/mongodb-org-shell_3.0.5_amd64.deb 407 Proxy Authentication Required
E: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.0/multiverse/binary-amd64/mongodb-org-server_3.0.5_amd64.deb 407 Proxy Authentication Required
E: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.0/multiverse/binary-amd64/mongodb-org-mongos_3.0.5_amd64.deb 407 Proxy Authentication Required
E: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.0/multiverse/binary-amd64/mongodb-org-tools_3.0.5_amd64.deb 407 Proxy Authentication Required
E: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.0/multiverse/binary-amd64/mongodb-org_3.0.5_amd64.deb 407 Proxy Authentication Required
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
There's no proxy I go to the Internet through.
When I press Enter or Backspace in the terminal, I get this:
Would you like to create one now? (yes/no): no^M^?^?^?^?^?^?^?^M^?^?
What's up with this?
I want to create a bootable usb flash drive with Windows. But whatever USB flash I use - with NTFS or FAT32 or EXT4, I always get this error: installation failed, 32512
The size of iso file is 4.3Gb, but that shouldn't be a problem for NTFS or EXT4.
What's the matter?
P.S. I figure the button Refresh isn't working properly, it just doesn't the refresh the list of devices when I click on it.
I've searched quite a lot but yet didn't found any solution to burn a bootable usb flash or cd/dvd with Windows from Linux having an iso file with Windows. I've tried dd if= of= ... but when I tried to boot from that usb flash, it just didn't boot.
Is there a reliable solution?
I installed MySQL Workbench from Ubuntu software center and it just doesn't start when I click on it. There's no error shown up. What's the matter?
UPDATE:
$ mysql-workbench --log-level=debug3 --verbose
/usr/lib/mysql-workbench/mysql-workbench-bin: error while loading shared libraries: libgnome-keyring.so.0: cannot open shared object file: No such file or directory
$ locate libgnome-keyring.so.0
/usr/lib/i386-linux-gnu/libgnome-keyring.so.0
/usr/lib/i386-linux-gnu/libgnome-keyring.so.0.2.0
~$ locate libgnome-keyring.so
/usr/lib/i386-linux-gnu/libgnome-keyring.so.0
/usr/lib/i386-linux-gnu/libgnome-keyring.so.0.2.0
I don't understand exactly what xargs does that's why I'm surprised why these 2 return different results:
find ~/Downloads -iname *btsync* | ls -al
find ~/Downloads -iname *btsync* | xargs ls -al
Why the first one doesn't return what I want? Instead it prints show all the files in the current directory.
I wonder, isn't still there an easy way to create a desktop shortcut in Ubuntu 14.04 (or Unity)? There is no context menu on desktop doing this.
So I tried the following: I looked for an app I want to create a shortcut for in the dash, then I tried to drag it to the desktop. And guess what? I got the error:
I've tried to install boot repair and failed
sudo add-apt-repository -y ppa:yannubuntu/boot-repair && sudo apt-get update
The error is:
$ sudo apt-get install -y boot-repair
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package boot-repair
I've never had this error before on other versions of Ubuntu or Mint, though.
I have the following
where /dev/sda2 - Windows7 and "unallocated" is the partition I want to add to my current Linux installation at /dev/sda6. But I can't do this for some reason. Even when I format unallocated partition and then I click Resize, I can only make it smaller. The same thing is true for /dev/sda6.
In other words, /dev/sda1 and /dev/sda6 don't see each other.
So how can I merge /dev/sda1 into /dev/sda6?
There is no much menu item "resize" on /dev/sda3, although it's not mounted:
a@a ~ $ sudo umount /dev/sda3
umount: /dev/sda3: not mounted
a@a ~ $ sudo umount /dev/sda6
umount: /dev/sda6: not mounted
a@a ~ $ sudo umount /dev/sda5
umount: /dev/sda5: not mounted
UPDATE2:
$ sudo lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
├─sda2 8:2 0 829.8G 0 part
├─sda3 8:3 0 1K 0 part
├─sda5 8:5 0 3.6G 0 part [SWAP]
└─sda6 8:6 0 98.2G 0 part
sdb 8:16 1 14.6G 0 disk
└─sdb1 8:17 1 14.5G 0 part /cdrom
sr0 11:0 1 1024M 0 rom
loop0 7:0 0 1.1G 1 loop /rofs
Clicking on /dev/sda3 and choosing "resize"
Please explain me what does this command mean:
wget -qO- https://toolbelt.heroku.com/install-ubuntu.sh | sh
wget - use wget to download something-qO- first argument is -q, but what does 0- mean? why does it have dash after it?| sh - something about pipe, but what exactly?Yes, I read man wget.
I wonder, why can't I change my mac address by doing this:
sudo ifconfig wlan0 down
sudo ifconfig wlan0 hw ether 03:a0:04:d3:00:11
The error is SIOCSIFHWADDR: Cannot assign requested address I googled but found nothing valuable.
P.S As usual, I can't do this. Nothing works. I took the new mac address which was incremented by 1 from my current one (old 11:11:11:11:11:cf, new 11:11:11:11:11:d0)
sudo ifconfig wlan0 down
sudo ifconfig wlan0 hw ether 11:11:11:11:11:d0
There was no error, it even connected to wifi automatically after I did this (even though I didn't do sudo ifconfig wlan0 up). I though it won. However, when I did
sudo ip addr
I've seen the same mac address as it had before. Nothing was changed.
When I shut down my computer, it doesn't shut down, only the screen "In progress" is showing, so that I have to push the power button.
How do I investigate where the problem is?
Sometimes I have a need to scan the files over the Internet given their urls. I didn't find any information about this capacity at the documentation of ClamAV. Does it allow to do that? How do I get the result of scanning?
I have a folder with many files those have a few sym links pointing to them like
/some_path -> /dir/file1
/some_path2 -> /dir/file2
/some_path3 -> /dir/file3
But I don't remember neither the some_paths no which files from dir have sym links pointing to them.
Now I need to delete dir (I really need it for some reason). And I also want no file to point to any file from dir since I'll delete it.
How do I unlink those files? What if I just delete dir, will they unlink by themselves?
I have Ubuntu and Windows 7 installed. Whenever I boot Ubuntu, I see a message during booting:
[ 9.035335] nouveau E [ DEVICE] [0000:01:00.0] Unknown chipset, 0x108120a1
[ 9.035377] nouveau E [ DRM] failed to create 0x80000080, -22
[ 9.035388] kvm: disabled by bios
[ 9.037022] kvm: disabled by bios
[ 9.038022] kvm: disabled by bios
[ 9.042021] kvm: disabled by bios
What does this mean and what do I do about it?