General :: Converting A PDF To Black & White With Ghostscript?
Oct 17, 2010
Similarly to this question:Convert a PDF to greyscale on the command line in FLOSS?I have a PDF-document and want to convert it to pure black and white. So I want to discard halftones. To convert to grayscale with ghostscript I can use this command:
After suspending my laptop, and then resuming the screen has black and white jagged wide zig zags across the screen. I can move the mouse and login fine, it's just the graphics are all screwed up. Has anyone had this problem before? Is this X? Is it a driver issue, my info is in my sig.
All I want to do is make the background for Mac OS X's Terminal Black so that I can run a Perl script with Terminal and have the background black for that.How would I do this for Mac OS X?How would I do this for an average Linux?
have a problem with an Acer Aspire one running linpus linux. I get a black screen with a white mouse pointer at startup. I don't know how this happened. I can interrupt the startup process with ^c and then see the following amongst other text :Loading x11 FronEnd module...Failed to laod x11 FrontEnd moduleFailed to launch SCIM
I prefer ubuntu (which I have been meaning to install for a while) but my netbook currently has linpus lite on it. (It's an acer aspire one). One night I left the netbook sitting open (forgot to close it), and when I went to use it the next day, when I started it up, the desktop did not show the normal icons in the background. It still showed the bar at the bottom with the connection icon, power icon, etc. as well as the "Internet" search bar in the top right corner.
But instead of the usual linpus desktop icons, there are just black and white horizontal bars, with some coloured dots in the black bars. I can still use the terminal to open firefox, and presumably other programs. It still connects to wifi signals, and the bottom bar looks normal and functional. I am posting this message right now with my netbook, and it doesn't seem to have lost any functionality. I would much rather just click on things most of the time instead of opening terminal for everything.
I'm a (very) recent Ubuntu convert. Today I burned the Ubuntu 9.10 ISO to a CD with DiskUtility (Mac) and installed it on an old dell laying around (I installed it on the whole disk--no partition, no trace of Windows left behind). Anyway, it was really awesome and running really fast, until I opened up F-Spot picture manager. It was working well until I went into a slideshow. It started lagging and eventually froze up. I tried pressing f5 to get out of full screen then trying to hit esc and then Alt+4 in an effort to close it.
In the end I had to hold down the power button to make it shut down. When I turned it on again, it started normally and went to the black and white Ubuntu logo, then just went to a black screen. I tried again, and this time got a GNU thing (called Grub, I think?) asking if I wanted to do recovery mode. I entered my username and password and it had an error and went to a black screen. Should I just put my LiveCD back in and install it over my previous installation..?
Since I upgraded to 10.04, too many of the roll-over and popup notifications show as black background with white (or yellow) text. I find this unreadable.What controls this? How can I change it to normal black text on white background?
I have 10.04 installed in a dual boot system with windows 7 pro on 1 desktops and one laptop. Also dual boot on a desktop with windows xp and Ubuntu 10.04. The two desktops run AMD processors and the laptop uses an Intel processor. On the two desktops after booting the screen will fade to black and white and then back to color. While in the black and white the computer is frozen. This happens using Firefox mainly and other programs. It never happens using my laptop with the intel processor. Does Ubuntu 10.04 have a problem with AMD processors? It does it so much it is hard to do anything with the and desktop computers, but I have never seen it happen on my intel laptop.
I got a used Gateway Solo 9550 from a friend. It was running windows when I got it. So I decided to try to test Debian on it. I am relatively new to the Linux scene so I have had a few issues with no idea how to fix them. The biggest one is video. I can get it the laptop to boot up in recovery mode and have nomodeset enabled. With nomodeset in gnome it will work for approx. 20-30 seconds, and then the screen will turn white then to black and then slowly turn rainbow. I know that its not a monitor problem because I ran DSL and DSLN on the same rig, but when I plugin an external monitor its fine on the external but not on the internal.
Specs of the Solo 9550 1 GHz Pentium 3m Processor 512 MB of PC100 RAM Geforce 2Go 100/200
After installing the Nvidia driver I get black and white boxes displayed during KDE login. After logging in the graphics are normal. I tried installing the nvidia driver from the opensuse repository and manual installation of the latest stable driver. I do not have this problem when I use Kubuntu so I don't think it's a hardware problem.
I 've recently installed UNR 10.04 Lucid Lynx in my old PC.
Specs: CPU Intel Pentium 4 2.66 GHz Mother ASRock P4i45GV R5.0 Chipset Intel 845GV w/ Intel Extreme Graphics (shared memory up to 64 / 256 MB -I don't really get which one-).
Nevertheless, when I start the Pc, Ubuntu loads and, when it's about to load the desktop, the screen turns black with white stripes and "turns itself on and off" (like when it receives no image). I don't really know if this is or not a graphic bug / problem, but it's quite strange, as I've used Ubuntu 8.10 and 9.10 before in that same Pc.
By the way, I get the same error with the normal Ubuntu Lucid. AND, I have a Win XP Professional SP2 installed (I've installed the Ubuntu afterwards, so I have the Grub as default bootloader).
Also, I get the same error when loading Ubuntu in LiveCD mode.
on a cold computer randomly appears black screen with white flashing stripes up to half of the screen preceded by a message "checking battery state... [OK]". - ubuntu 10.04 LTS
- desktop compaq evo d510 sff
- intel 82845G/GL[Brookdale-G]/GE chipset integrated graphic device keyboard is not active on that black screen, BIOS settings look OK
Firefox turns black and white while I'm using it, sometimes when I'm watching videos, sometimes when I click on a new page, sometimes when I'm doing nothing, what could be causing this? I'm using Ubuntu 10.10 - 64 bit.
Dvds I make with DeVeDe play in color on my laptop (Ubuntu) but when played in my home theatre dvd player they only play in black and white. I have a feeling this is a codec issue?
Has anyone seen a problem in which all videos play only in black and white? It matters not which player I use VLC, Mplayer, Banshee. I am a new user using 11.04
I am using a emachine w2925 desktop and I installed the newest ubuntu. And it randomly goes to a black screen with white bars vertically half way down the screen that flash between bars and a black screen every few seconds.
Downloaded the F10 live CD. Booted to it, got past the white, blue, and dark blue loading bar then my screen would be covered in black and white lines. No sign of the GUI except for a mouse cursor. ctrl+alt+backspace would cause the display to blink off and then come back on to the same thing. ctrl+alt+f2 would bring me to a terminal, logged in as root, but from there I couldn't do anything. startx would tell me I had x running on another screen.
hitting tab when booting the livecd and adding "xdriver=vesa" and "nomodeset" to the boot line. That works. I get to the desktop at native res with desktop effects. Killer. I tried to install; install went flawless, rebooted to my HDD and the same issue, black and white bars. When booted to my HDD, however, ctrl+alt+f2 doesn't bring me to a terminal, it causes my monitor to go into sleep mode and my computer becomes unresponsive so I can't do anything from the command line.
Here's what I'm getting at : how do I get my installed version of F10 to do the "xdriver=vesa" and "nomodeset" args that the livecd can do?
My machine is a home built machine I bought off of a friend. P4 2.4 ghz, GB RAM, 2 80GB HDDs, Radeon x1600.
When I print to my HP LaserJet 1020 - which has worked fine since OpenSuSe 10.x to OpenSuse 11.3, any images print inverted.
For example, what is white in the image is printed black, and what is black in the image is printed white. When printing a document from LibreOffice, text on the same page as the image prints correctly.
I've checked that this is happening when printing images from LibreOffice, Okular, and Gimp, and tried it with PNG, TIF, and GIF image formats.
However, when I open HPLIP and send a test print through, it prints correctly - text and images all normal.
I am not sure but i think I have had a HardDrive failure of some sort.
When I boot up I get a black screen with white letter saying the following:
Code:
Does anyone know if there this is a HardDrive failure or is it something else that I can try to fix? I have back ups of all critical data so a reinstall is possible but I would like to get some noncritical data out on my XP partition.
I insert my DVD into my machine. The little "waddya wanna do" window then opens, and I select "play in VLC." I then press the play option on the video menu (not the play button on the VLC controls). Then the VLC window turns black, or the part where the video is supposed to appear does, anyway. So double-clicking to get to fullscreen sometimes fixes the problem, but then I can only view it in fullscreen, not good. It didn't fix the problem this time, so I double-clicked again to get out of fullscreen. Then my whole display turns black and white. WTH? The display problem fixes on a reboot.
This happens on a regular basis when I try to play movies. My display is, right now, black and white. After I finish this post I'll restart my computer to fix the colors.Also, it should be helpful that when I move the VLC window or am going to/from fullscreen, I can see the movie for a split second, and in full color. The rest of the screen stays B & W, though.Also, for some reason, when I play a movie, VLC open two windows: one with the video, and the other with a visualization and a title bar saying "VLC (X11 output)"
New install of the latest Ubuntu. Put in Tvtime and it worked straight away, sound and video, (although does not seem to want to switch between svideo, television, and composite, at least nothing seems to happen.) But it is in black and white!? Tried right-click menus nothing obvious seems to change things.
I have Ubuntu Studio, Ubuntu and XP in 2 HDs. I upgraded Studio to 10.04 and XP doesn't start anymore. I upgraded Ubuntu with and error in the GRUB and then just Studio was booting...With $ sudo mount -t ext4 /dev/sda2 /mnt $ sudo grub-install --root-irectory=/mnt /dev/sda I recover Ubuntu boot... but not XP...at last I removed completely the GRUB2 in the Ubuntu and Studio synaptcs...Now I have all the same but with GRUB 1.97 Ubuntu starts ok, Studio starts after an error message something like: dev/ no such device. and after choosing xp in the list all that appears is a black screen with an white I will post down the sudo fdisk -l and sudo gedit /boot/grub/grub.cfg
I have here two old identical compaq pc's with 64mb ram.I want to copy drive/os from one machine to other. So i do a drive to drive clone (witn both hd's deing connected to another machine). And it says its done and okay. But the second (cloned) machine doesnt boot. And have the black screen with the blinking white cursor in top left corner. I have already tried to do fdisk /mbr and also copying partition table from original to destination disk. Because i think it is logical that with a drive to drive clone it sould be copied. But i have a doubt in that somehow. Because why would it not boot if it was copied then
I just installed Ubuntu 10.04 on an old Compaq desktop, and after working on it for a while, screen randomly turns blank, usually with flashing horizontal white lines. Can anyone help? Someone already told me to try memtest, which I already performed, but nothing happened.
How can I change the text colour on the panel from black to white?I am using Karmic 9.10 with clearlooks and crux window borders.I have changed the panel background to the Thai flag, but it is blue where the text lies, and white text is easier to read than black on a blue background.
I have a fresh install of 11.04 on my ThinkPad, and it is crashing to a black & white text screen unpredictably. I was able to find the following in the syslog, which looks similar to what I see when it crashes: