Please take note that, for Ubuntu 12.04 and in order to be able to run several screensavers using images from the harddisk (e.g., Carousel, Gleidescope, GLSlideshow, Jigsaw, or XAnalogTV) , I had to install some additional packages.
If you sudo apt-get remove gnome-screensaver but then sudo apt-get install rss-glx (see this Ubuntu Forums post and this one), the Really Slick Screensaver (GLX) effects will run on top of a screen that has not been blanked under Unity in Ubuntu 12.04 LTS, not just in xscreensaver-demo but also when the real screensaver kicks in.
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I've had enough of the new screensaver, "Movie Magic". When it comes on and I press my remote to continue playing what I was watching previously, it instead opens whatever the screensaver is advertising. I won't curse here but I will say, I absolutely hate this feature. I lose what I was previously watching and have another channel open and auto play some other show I never asked to see. I could see this being an issue for people with kids as well - I don't suspect parents want their young kids watching movies like The Departed.
I went to change my settings and I have only 3 options now. The "Movie Magic" one that I despise, a blank logo one, and powersaver which is black. I don't want any of these, I want the options I used to have.
I used to see many options for the background and screensavers but in the last 6 months or so I noticed this change. It may have been more recent but I've been busy and can't be positive of the timing.
Channels, Themes, or Screensavers can be removed at any time for a variety of different reasons. At times, our content providers may choose to remove their channel from our platform at their own request. In other cases, a channel may be removed by us if it violates our terms and conditions. We take reports of piracy or any other unlawful activity very seriously.
Or, in other cases, it for none of these given reasons. Take the Haystack News screensaver (one of the few useful, functional and free screensavers on Roku), who now has to pull it (and replace it with a message it's having to do so...) stating that "Roku requires that a screensaver not be bundled with an app, so we have to remove the screensaver functionality from our app."
I admit there has become a real blur between some apps/screensavers, but why punish the successful app publishers on the platform? The channel store is BURSTING with garbage/abandon/disfuntional offerings, but Haystack is one of the most updatd and robust players on the platform.
I browsed through the default set of screensavers and the most are ugly, a couple are decent and the only quality ones are Flurry, GLSlideshow, MetaBalls are PopSquares. Where does one find more nice screensavers for Xubuntu? APT repository or xfce-look.org doesn't seem to have it. Or would you recommend running gnome-screensaver instead of xscreensaver? What options are there so that my screen doesn't display rough (not antialiased) visualizations of mathematic obsessions?
Xscreensaver is a dated application and you would not find too many good good looking screensavers for it. I would personally recommend that you use gnome-screensaver. Look here if you have any problems.
Setting it to update every 24 hours has not helped. All aerial themes are turned on. I have also checked that I have sufficient storage space (I have fewer downloaded apps now than I did before the factory reset when I had all the screensavers available).
Try setting a non-aerial screen saver, activate it once, then set back to Aerial, and let it get new clips over the next couple of days. That is as close to a reset as you can get for just this feature.
Tried that + alternating between the photos. Good for one session, then it reverts back to same stuck screensaver for like a week. Think it's an Apple server problem or something, not wasting any more time with it.
I'm looking for a decent, non-lame way to inhibit xscreensaver, kscreensaver, or gnome-screensaver, whichever might be running, preferably in a screensaver-agnostic manner, and it absolutely positively must execute fast.
I have a gtk based game program that's cranking out 30 frames/second while mixing several channels of audio, and since it's controlled by a joystick, sometimes "the" screensaver will kick in. I put "the" in quotes, because there are at least three different popular screensavers, xscreensaver, gnome-screensaver, and kscreensaver, each with their own unique and clunky methods by which an application might inhibit them.
Currently my code simply whines piteously about the uncooperative screensaver developers if any screensaver is detected and the joystick is in use, and doesn't actually try to do anything other than advise the user to manually disable the screensaver, as the only other thing I can think to do is so incredibly ugly that I simply refuse to do it.
Just wondering if anybody else has run into this, and what they've done, and if they did anything, if it was as ugly as it seems to me it would have to be, or if there's some elegant solution out there... Seems like maybe synthesizing X events somehow to fool the screensaver into thinking there's some activity might do the trick in a universal way, but I'm really not sure how to do that (and hoping you wouldn't need to be root to do it.)
No, of course not expecting to run it every frame, but don't want it causing hiccups when it does run, is all. With my thought of synthesizing X events, I was imagining it would be just often enough to make the screen saver think there was activity.
Looking at xdg-screensaver (which seems to be a shell script that ultimately just does a "wait" for my process -- cool) it seems to be made to do just what I want. I knew I couldn't be the only or first one to face this problem.
There's no nice clean way to do this. In my opinion there should be a mechanism administrated by the X server, which both screensavers and interested applications can voluntarily use to negotiate suppression of any screensaver during the runtime of one or more programs. But no such mechanism yet exists to my knowledge. GNOME and KDE look to be implementing a DBUS approach to this problem, but in my opinion even if it becomes widespread (it isn't yet widespread enough to rely on it in 3rd party code) it's not the right approach.
However, xdg-screensaver is a FreeDesktop standardised shell script which you can run as a sub-process to control the screensaver. It controls most popular screensavers, and the OS vendor would be responsible for updating it/ maintaining it to work with newer screensavers or better ways of doing this in the future. Unlike many other kludges it will automatically re-enable the screensaver if your application crashes or exits via some route that forgets to call the re-enable code. See the manual page for details in how to use it.
As a GTK+ user probably the trickiest aspects of this for you would be creating the sub-process to run the shell script (if you haven't done this before you will want to find a tutorial about using fork + exec) and getting the XWindow ID of your application's main window to give to xdg-screensaver.
You ask that the code should be "fast". This makes me wonder if you're expecting to run it every frame - don't. The xdg-screensaver solution allows you to disable or renable the screensaver explicitly, rather than trying to suppress it once per frame or anything like that.
@eskimo We are also getting reports of failures in first-party Apple screensavers using 13.4 on multi-monitor systems - in particular the Shifting Tiles screensaver has random blank screens when starting on 2 or 3 monitor systems.
With 3 monitors: after the screensaver starts, I get 5 seconds of blank screen, then monitor 1 starts, then another 5 seconds, monitor 2 starts, then another 5 seconds and monitor 3 starts. With repeated testing, the pattern is somewhat random: sometimes 1 and 2 start right away, followed by 3 about 5 seconds later.
A screensaver (or screen saver) is a computer program that blanks the display screen or fills it with moving images or patterns when the computer has been idle for a designated time. The original purpose of screensavers was to prevent phosphor burn-in on CRT or plasma computer monitors (hence the name).[citation needed] Though most modern monitors are not susceptible to this issue (with the notable exception of OLED technology, which has individual pixels vulnerable to burnout), screensaver programs are still used for other purposes. Screensavers are often set up to offer a basic layer of security by requiring a password to re-access the device.[1] Some screensaver programs also use otherwise-idle computer resources to do useful work, such as processing for volunteer computing projects.[2]
Before the advent of LCD screens, most computer screens were based on cathode ray tubes (CRTs). When the same image is displayed on a CRT screen for long periods, the properties of the exposed areas of the phosphor coating on the inside of the screen gradually and permanently change, eventually leading to a darkened shadow or "ghost" image on the screen, called a screen burn-in. Cathode ray televisions, oscilloscopes and other devices that use CRTs are all susceptible to phosphor burn-in, as are plasma displays to some extent.[3]
For CRTs used in public, such as ATMs and railway ticketing machines, the risk of burn-in is especially high because a stand-by display is shown whenever the machine is not in use. Older machines designed without burn-in problems taken into consideration often display evidence of screen damage, with images or text such as "Please insert your card" (in the case of ATMs) visible even when the display changes while the machine is in use. Blanking the screen is out of the question as the machine would appear to be out of service. In these applications, burn-in can be prevented by shifting the position of the display contents every few seconds, or by having a number of different images that are changed regularly. 152ee80cbc
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