Debian Configuration :: Only Root Can See Scanner?
Aug 20, 2010
Having successfully installed SANE and gotten a scan from my ancient Mustek scanner, I thought I had it setup. But that was running in the root terminal window. When I try to run xscanimage from GIMP in my normal user account it doesn't start up. Running xscanimage in a normal terminal it says it can't see any scanners. Yes, I added my user account to the scanner group. What else needs to be done to let a normal non-root user access the scanner?
There is a problem with scanning on Brother multifunctional under Debian Squeeze/Sid. I get things smooth and good under root (both scanimage and xsane), but under user it gives
Code:
scanimage: open of device brother3:bus6;dev1 failed: Invalid argument Obviously as under root works fine, lsusb has no problems with detection.
Code:
Bus 005 Device 010: ID 04f9:01ea Brother Industries, Ltd
Already fixed /etc/fstab:
Code:
none /proc/bus/usb usbfs auto,devmode=0666 0 0
but it is useless anyway. I had already used the scanner under simple user in ubuntu and it all worked.
I added myself to the scanner and saned groups, however scanimage -L only detects the device when run as superuser. I think this may be related to [URL].
root@icecream:/home/discord# scanimage -L device 'epson2:/dev/sg0' is a Epson GT-9800 flatbed scanner discord@icecream:~$ scanimage -L
No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages).
I was able to get the printer up and running by downloading the printer driver for debian linux (3.1) from the Canon site without any problems.
Unfortunately I am not having the same luck with the scanner.
I tried downloading ScanGear MP for Linux (deb) (1.3) from the same Canon site but have not yet been able to get the XSane Image Scanner to recognize this scanner driver for my Canon.
I have a "time-server". It's sending time to different devices through different ports/protocols. The problem is that it has no operator and that makes some extra difficulties.
Now when i try to start it using terminal Code: Select allsudo ./myprogram works fine and
Code: Select all./myprogram doesn't work.
It is so because without sudo i have no access to ports. As a result If i add my program to System->Preferences->Startup Applications it has the same problem. So i need to start it as root, auto-start, right after auto-login to system but without entering password cause nobody will do it.
Also I need to start ntpd but it also asks password sometimes I've tried googles but it offer a few ways with entering password that isn't suitable for me or writing some scripts/changing system files but with no example I'm afraid to break it all. So is there a way to start Myprogram and NTPD as root with no password entering?
My system is Debian 6.0.10 Squeeze, Kernel 2.6.32-5-686
Installed Debian 8.2 a while back, and I've been having issues with getting the machine to suspend correctly. If I try to put it to sleep when logged in to my regular user account the screen just goes black and then the computer hangs. However if I put it to sleep as root everything works fine. I do this by running this command (as root):
Code: Select allsystemctl suspend
What can I do about this? Worked fine on Debian wheezy..
Btw, just found this in the dmesg log. Connected perhaps..?
Code: Select all[Â Â 6.863018] ACPI Warning: SystemIO range 0x00000000000018e0-0x00000000000018ff conflicts with OpRegion 0x00000000000018e0-0x00000000000018ef (\_SB_.PCI0.SBUS.SMBI) (20140424/utaddress-258) [Â Â 6.863028] ACPI:
If an ACPI driver is available for this device, you should use it instead of the native driver
I think my root drive is 100% full causing strange problems with my video server. What steps can I use to see what's taking up the room on the drive and perhaps identify files that can safely be deleted?
Code: Select allroot@lenny:/# df -h Filesystem        Size Used Avail Use% Mounted on /dev/sda2         55G  53G   0 100% / udev           10M   0  10M  0% /dev tmpfs          793M 1.1M 792M  1% /run
For my dissertation I created a debootstrap install of Lenny. When I boot this system I just can login with root without a password. When I want to ssh this machine with the debootstrap install I can't just login with root. I'm asked for a password which I don't have.
So I created one with passwd root and after that I can connect to the machine with ssh and the given password. But the machine still logs in with without a password.
I'm configuring some security and i'd like to run arpon to a specific device everytime wicd connects.So, if Wicd connects to a wireless, i'd launch gksu arpon -d -i eth2 (for example.) But this doesn't work, because it seems that gksu only works for X apps.I found that if i do: gnome-terminal -e 'sudo arpon -d -i eth2' It works, but it leaves me with a terminal window open, and i'd like to be asked for a password gksu style.I've also tried this: gksu -- arpon -d -i eth2which also works, but the program quits right after it's started.Am i missing something here?
We have setup Squeeze a Test machine , just for some tests, without network, Internet etc. and we need to allow root login in Gnome. We've changed /etc/gdm3/daemon.conf:[security] AllowRoot=truebut still doesn't work.
my debian laptop this morning ,saw that the update manager had updates..97 of them??? then when tried to view them the package manager freezes and becomes unresponsive. needed to do a few things and found my root password is NOT working. this all happened at the same time, i wonder if its related? have i been hacked? is this something new? cant reset root password (tried two methodeds with no luck) and cant view the updates altho i question 97 new updates are needed.
Is there a way where I can take like 50GB from my home folder (I have 375 avail., but using only 22GB) and put it to the root partition? Twice now my system has almost ran out of space on root, so luckly I was able to clear out old stuff so I don't have login issues after finding the hardway the first round lol. I just want to make sure I can login with out being forced back out because root don't have space to let me login.
I made a mistake in Gnome Disk utility tool. Instead of changing the options for a USB key, I changed the options of the root partition.
In Initial state, automatic options were desactivated. I just activated them. And after desactivacting them, I realized my mistake and switched back to "non automatic options".
By doing this, I suppose that defaults values were used since now, the system starts in command line mode and no more in graphic interface mode.
When I try the "startx" command, I get a "read-only" error.
With the command "sudo mount -o rw,remount /" the graphic interface is started.
Below is the configuration of the partition under the gnome disk utility tool :
"Mount at startup" is checked "Show in user inteface" and "Require additional authorization to mount" are unchecked
Mount options : nosuid,nodev,nofail,x-gvfs-show Mount point : /mnt/eb11d4d6-75db-XXXx-XXXx Identify as : /dev/disk/by-uuid/eb11d4d6-75db-XXXx-XXXx Filesystem type : auto
I do not want to change anything that could leat to a critical error. So what do you think I should do ?
I have squeeze with gnome. Various apps let me log in as root when needed to but if I logout as a user and try to login as root it won't let me (won't authenticate password). I had this problem before and reinstalled Debian and definitely checked for it to allow me to do this and it worked for a while after new install. Apparently some update overrode my preferences. This is a major defect and may force me to abandon Debian. I don't use root often but I don't have any use for a operating system that won't let me use it. Anyone know how to correct this. I am not interested in using a terminal on a regular basis or ever for that matter.
on my netbook I've tried to make possible for my user to shutdown without needing a password. battery could run low when I'm not in front of it. Editing sudoers has allowed my user to shutdown the system, but Gnome still prompts me for the root password whenever root is logged in too. That's usually the case, because to avoid entering the root password multiple times whenever I need elevated privileges and not wanting to cache the root password, I keep a Root Terminal always open.
I just installed Debian 6 on a server and when the server powers up, it shows me all the accounts I created in order for me to choose and login under an account, except for the root account. At the colo where the server is going, they need the root account at the login screen.
Reinstalled Debian Squeeze (64bit/gnome) on my Notebook using Netinstall. Everything worked like always but in the setup instead of typing in a root password as asked to i just pressed enter (in the hope of not having to type in a pw in the console later, just having to press enter then)
When i needed rootpw to install some software (using SoftwareDownloader) the normal loginpw seemed to work, but not in the console. ari@HP625:~$ su - Password: su: Authentication failure
I installed Debian Kit on my Asus Nexus 7 tablet, and after following the installation tutorial I got it running except for I'm stuck on the step to create a new user. (btw link: [URL] .... )
Here's how it went (I can't copy&paste from my tablet so I have to type out everything...):
Code: Select allroot@android-6c40984c21c156ae:/# adduser paul374 Adding user `paul374' ... Adding new group `paul374' (5000) ... Adding new user `paul374' (5000) with group `paul374' ... Creating home directory `/home/paul374' ...
[Code] ....
So since I read somewhere that selinux had some permission problem, so I did a few chcons:
Code: Select allroot@android-6c40984c21c156ae:/# ls -Z | grep passwd       u:r:init:s0 passwd u:object_r:unlabeled:s0 passwd- root@android-6c40984c21c156ae:/# ls -Z | grep shadow       u:r:init:s0 gshadow u:object_r:unlabeled:s0 gshadow-       u:r:init:s0 shadow u:object_r:unlabeled:s0 shadow-
...but still same thing as what happened in the beginning...
Anyway my goal is to create and be able to log in to another user so that I'm not stuck running root all the time. (Which, as we all know, is a bad idea.)
If there's a way to manually create the user by editing a few files, and root still won't be able to change passwords, I'm fine with that, as long as I have another user. Whatever it takes to just get a non-root user log-in-able...
I forgot to mention that since this is the Asus Nexus 7, there is no removable media, so chrooting from another Linux machine isn't an option, and neither is removing an SD card to use a LiveCD on it.
I'm using Debian Jessie Cinnamon right now. I've got 1 user account on my machine--fred--as well as root, of course. "fred" is an administrator, and many times that is enough for root priviledges, for example, I can install packages via apt or dpkg. However, I cannot access "Users and Groups", or install packages via GDebi, with my password. For that, I have to have the root password.
I know that it is possible to let the admin account handle everything and not even need root--for example, Mint and (I believe) Ubuntu do it this way. I don't know how, though.
Code: Select allgroups fred fred : fred cdrom floppy sudo audio dip video plugdev netdev lpadmin scanner bluetooth
I did disable the root account by Code: Select allsudo passwd -l root to see if it would make any change. Nothing different happened except that I now can't use GDebi or access "Users and Groups" since the root account and therefore password is inactivated. Not a big deal to get it back, though.
I have lost my password for my root and for my user account.
Code: Select alluser@debian:~$ su Password: su: Authentication failure user@debian:~$ su Password: su: Authentication failure user@debian:~$ su
I have just installed a gust debian 8 on debian 8 host in virtualbox, and when i wonted too login as su/root on the host there where no login possible, is there a way to regain the root password for the host?
My root filesystems flooded so I'm trying to move it to another (bigger) partition but I'm not sure of the best method. I just tried to use "dd if=/dev/sda1 of=/dev/sda6" to copy it but all that did was give me a brand new partition with no freespace available presumably because the filesystem is smaller than the partition. Is it possible to make the filesystem bigger?
The system crontab (/etc/crontab) uses the same format, except that the username for the command is specified after the time and date fields and before the command.
[code]...
Every hour, I get an e-mail complaining about the first line of the crontab:
[code]...
I get the same complaint from the other entries: It looks to me as if cron, or anacron, is trying to execute the user (root) as a command. Predictably, the shell doesn't like it, so barfs and triggers an e-mail about it. Why is this not doing what the man page says it should do? The 2nd problem I believe is related to exim, not cron. The e-mails I'm getting above are being bounced from my ISP because they are directed to root@myisp.com, rather than my regular e-mail address. When the message bounces, it bounces to my regular e-mail address. In /etc/aliases, I have root: [URL]... and in etc/email-addresses I have root: [URL]... Adding the entry to /etc/email-addresses allowed the bounce to find me because the sender's address is [URL]... but how can I get cron to send these messages to me in the first place, instead of root?
I am using a kernel with no initrd. I have had this kind of panic before. Usually it means that the kernel can access the hard drive because the driver for the controller or filesystem isn't built into the kernel.
The kernel is 2.6.34 vanilla.
My IDE controller is a Silicon Integrated Systems SiS 5513, and I built the driver for it into the kernel BLK_DEV_SIS5513=y
My /boot (hda1) is ext2, and everything else is ext3
EXT2_FS=y EXT3_FS=y
My grub entry (hda2 is my root partition) kernel (hd0,0)/vmlinuz root=/dev/hda2
I have a very strange problem.ometimes, yes sometimes not all the time, I get a Destination Host Unreachable when I ping a computer on my network. If I switch to root using su I can ping that same computer. Here is a screen shot:
joseph@laptop:~$ ping 192.168.1.14 PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data. From 192.168.1.9 icmp_seq=2 Destination Host Unreachable
My debian server has been attacked due to a security breach in exim4 4.69-9 (probably applies to loads of other versions too). The security breach allows the attacker to get root access by creating a buffer overflow in a header which then can be used to inject code.
[URL]
The securtiy breach is fixed with 4.69-9+lenny1 I want to share my actions with you on what I did to (hopefully) get rid of it. However at the time of writing this, the above website is down due to too much load (DDOS Attack?). How you can check if you've been attacked:
The attack creates a buffer overflow in exim4, which results in paniclog entries.
$ cat /var/log/exim4/paniclog 2010-12-17 07:34:11 string too large in xxxyyy() 2010-12-19 10:42:10 string too large in xxxyyy()
this would be an example of two attacks. One on 2010-12-17 and the other two days later 2010-12-19.with this information you can start find potentially infected files. There may be a better way, but I searched for them with this command:
$ find / -mtime 31 2>/dev/null # files,directories,links created 31 days ago (i.e. 2010-12-17)
I upgraded a Guruplug Display machine running Lenny to Squeeze. It's running Linux on a MicroSD device, running an ARM-cpu.
# uname -a Linux gplugD 2.6.29 #1 Wed Feb 16 17:59:04 IST 2011 armv5tejl GNU/Linux yeri@gplugD ~ $ cat /etc/debian_version 6.0.1
However, after rebooting, every non root user was unable to access anything related to the net.This means, DHCP failed to auto start, ntp is giving errors, etc
# ntpq -p localhost: timed out, nothing received ***Request timed out
daemon.log:
Mar 27 06:07:44 localhost ntpd[1478]: ./../lib/isc/unix/ifiter_ioctl.c:348: unexpected error: Mar 27 06:07:44 localhost ntpd[1478]: making interface scan socket: Permission denied Mar 27 06:07:44 localhost ntpd[1478]: Too many errors. Shutting up.
As root:
gplugD ~ # ping 85.12.6.171 -c 1 PING 85.12.6.171 (85.12.6.171) 56(84) bytes of data. 64 bytes from 85.12.6.171: icmp_req=1 ttl=58 time=42.1 ms
