I am running a service (Selenium) that relies on launching browsers, even when there is not an active display. So in my startup script, I have
Code:
What is the equivalent code I should put in the shutdown method? In other words, to de-activate the display? Right now, if I restart, I get the errors ...
Code:
server:
Fatal server error:
Server is already active for display 15 If this server is no longer running, remove /tmp/.X15-lock and start again.
I've got a rather annoying problem with OpenSUSE 11.1 x86_64, I can't turn off the display power management! I've tried from the KDE 3 and 4 settings as well as GNOME, and finally YaST2. There's nothing in monitor's controls (the buttons on the monitor itself). The actual GUI controls in KDE/GNOME/YaST2 work (as opposed to being grayed out or disabled) and the system doesn't complain when I hit apply/OK, but every time I disable display power management, I wait about 15 minutes and sure enough, the screen blanks. I've checked and made sure the screen saver is disabled, I've looked for a setting to change in the YaST2 sysconfig editor and the kernel settings app, but can't seem to find anything. The only other thing I can think of is to try the acpi=off kernel boot option. I'd rather not resort to that. Anyone know if there is some super secret hidden setting somewhere that might be overriding everything else? Could this be some sort of ACPI incompatibility issue?
I am wondering if it is possible turn off my display with a key of my laptop's keyboard. I mean if I press ctrl + o then my display turn off and then if I press ctrl + o my display turn on.
I just did the upgrade and I want to turn off the display after 30 minutes. I check that selection but the display does not turn off after 30 minutes. It is still on. I enabled this setting through the power management. The screen saver is on, go to blank display but the monitor does not turn off.
On Windows, dual boot on the same machine, the monitor does display off. I don't know if this is part of the problem or not, but when I go to "System -> Preferences", there are two different "Screensaver" options.
I have XFX ATI-HD5670 and use proprietary catalyst 11.2-1 in 64-bit Fedora 14.
I am not sure when this started, or if it ever did work before, but when I started noticing that the screensaver will not turn off the monitor, I set the gnome power manager to make the monitor sleep after an hour.
Now, the display will not turn back on after it has been in sleep mode. I know the system is still running fine as I can ssh from another PC and see that everything seems to be normal, no error message in dmesg, /var/log/Xorg.0.log, etc.
/var/log/Xorg.0.log shows that monitor DPMS is not detected but still enables DPMS:
Is this a problem with catalyst driver? I know it's not the PC or the monitor, because I have a 2nd PC with the same video driver with the same problem, but others without this driver don't (ati open source, nvidia, etc. all work fine.)
I'm wondering if the problem always existed before, but I just didn't notice it because the display sleep mode was never set? If that's the case, my hunch is that it looked like it worked because the monitor was smart enough to turn itself off when the screensaver kicked in and just showed a blank screen, and the video driver was never involved with sleep mode until I set it in gnome power manager, at which point it started showing this problem of not waking up? And because the screensaver was no longer set to blank the screen, but to show some animation, that's why the monitor will never sleep anymore?
I have Ubuntu 9.04, and a HP laserjet 1018 printer.
I install the printer using:
And when it ask me about plugin I give the path to it. (the 3.9.2 version of the plugin, because Ubuntu 9.04 has the 3.9.2 version of hplip)
well I install the printer, everything works perfectly.....but, when I turn off the PC, and turn it on again, the printer does NOT work!, I send work for being printed but mothing happens , Ubuntu tells me that the job was printed but ... no case, my printer does not print it.
I have to install it again since cero. what can I don to stop install it every time I turn off the computer ?
I installed fedora 13 in its LXDE flavor in my laptop. I noticed when it goes to save energy mode, the TFT retro-illumination is not turned off. The display just stays black with light. How to make the display to turn off when the system enters in save energy mode?
When i ssh to server using -X, i always confuse about which display number i should export. It seems to me sometimes the display number has been used by something, so what i can do is only
I have the following scenario that doesn't seem to work normally. I have a windows 7 pc from which I am using putty to connect to my other linux servers (all running redhat 5 and 6). So here is the scenario that works and one that does not work. And I'm trying to figure out the one that does not work. Scenario that works:
From windows 7 (putty) I ssh into Linux_Server_1. echo $DISPLAY localhost:10.0
I run xclock and I see it pop up on my windows 7 pc. I am using xming on windows 7 to help me populate the display from linux to windows. One that does not work:
From windows 7 (putty) I ssh into Linux_Server_1. Then from Linux_Server_1 I ssh into Linux_Server_2. echo $DISPLAY <no output>
I try to setup $DISPLAY with localhost:10.0 or 0.0 or even my windows 7 pc ip address:0.0 ....etc Then when I try to run xclock I doesn't work.
I get these error messages: Error: Can't open display: <ip of display>
Also as a side note all our Linux servers are sitting on one subnet. My pc is sitting on another subnet. I use vpn to connect to the subnet where the servers sit from my pc.
I want to turn off ASLR on my own PC. But each time I type "sudo echo 0 > /proc/sys/kernel/randomize_va_space", the system shows that Permission denied". How can I make it work? By the way, my OS kernel is 2.6.30.
This has probably been asked before and if it has, I'm sorry, I just don't have time to search for it right now. I have a bunch of times that are in .tar format, and need to be made into .tar.gz. How do I do that? I really don't want to go through and manually compress each and every one, because there's a lot of them!
In my notebook I use Fn+F2 to turn on bluetooth, but in slackware that doesn't work, to have bluetooth in my slackware I have to turn it on in Windows and reboot.
why when I insert a cd/dvd/flash nautilus opens as a default file manager under KDE instead of dolphin krusader? in my system settings krusader is set as the default manager, but still nautilus somehow keeps showing up, and I'm wondering how to change that?
I keep nautilus because it's a dropbox dependancy... ok, I know there are workarounds so one could use dropbox without nautilus but I didn't bother trying that out... I don't mind keeping nautilus but I just want it to be quiet :D
How can I make the less utility in Linux not wrap lines?
Long version: Often I need to view huge CSV files using less with hundreds of columns. I frequently only care about the first couple columns. However, word wrap causes one line to become several lines even on wide-screen monitors.
how to turn off all mysql logs because mysql is using too many resources. I turned slow queries log and there is no slow queries here is what I want to turn off the logs maybe this is causing mysql to high load ?
I am using Cent Os 5. I want that the system should shutdown automatically at 7:00 pm daily and next day I manually turn on the system.I have google it but the syntax is not clear.
I use # crontab -e and write the command 0 19 * * * /sbin/shutdown -h now
I am trying to turn Trace off on Apache/2.0.52. From one of the previous postings on this site it was stated that TraceEnable should be used for newer version of Apache (1.3.34+ or 2.0.22+). However, when I tried to use the man pages to get some information on how to use the command I got "No manual entry for TraceEnable". Can you tell me what version(s) of Apache supports this command?
similar to this problem http://www.linuxquestions.org/questi...nstall-673571/ i cannot seem to get the wireless card to turn on. ive tried NTDISGTK and Ntdiswrapper to no avail. it recognizes that the hardware is there, but will not turn it on. in terminal i have tried to force start it, but from what i remember, it gives me an error about authentication (might be access not authentication) ill get back here when i boot ubuntu and take some screenshots, at the moment i's running XP and hating it.
I have an ACER Travelmate 32600-4542. The original OS was windows XP. I installed Linux Mint 10.0. I ran that a little while and for some reason it wasslow and would occasionally freeze for a few seconds at a time. I got sick of that andid a clean install of Slackware 13.1. The problem I am having now is the wireless won't come onI try to switch the power switch and it will not turn on. I am fairly new to Linux and don't even know where to start to find out why it isn't turning on. I didn't have any problems with it turning on with Mint.
Is it possible to have the power button emulate the press of a key? On my media centre I have XBMC running and it doesn't recognise me pressing the power button. If I press S (on the keyboard) the shutdown menu pops up.
I used the Assistive Technologies on screen keyboard because hotplug was not working and I could only use my bluetooth mouse. Now, even after disabling Assistive Technologies, the icon still appears in the apps toolbar, next to my network connection status icon and battery status icon, also next to the clock and date.
I have been dual booting my XP and Ubuntu for a while now. However, my pc monitor does not turn on until I am booted into windows/linux. This means I have to 'guess' to a certain extent which OS to select on boot (using GRUB). I expect I will have to change a setting in the BIOS but I am not too sure what to look out for.
After turning on my pc I have to restart it for it too do anything, it appears to just hang!However as I cannot see what is happening due to the monitor problem I am completely in the dark as to why it would do this/what is going on! I have XP installed at the front of my hard drive and Ubuntu at the back. It worked ok the first time I tried it after install (still had the monitor problem but was able to guess) then after that this random problem!
I have an old hp that i installed ubuntu on and I was wondering how I can turn it into a real router. By real router I don't just mean broadcast the internet but use security software, configurations, and all the stuff normally found on a real router. What are the steps i need to take? I dont have 2 NIC's in it just one but I do have a wireless usb that I can just stick into it.
Is it possible to turn a computer into a mega-cell-smartphone using Linux? Are there USB cellphone transmitter/receivers? Is there any Linux cellphone dialing software?
