General :: Switch To VGA Graphics Mode Without BIOS Interrupts?
Feb 14, 2009
I am working on development of an TOS that runs in Protected Mode. I am required to switch it from text mode to graphics mode. Everywhere I google I get only one solution set AX to 0013h and call INT 10 and easily the VGA Graphics Mode is set.
I am working in protected mode and hence cannot use INT 10. Can someone please guide me? I came across a post where it was said that this can be done by setting the VGA registers, but I could not understand much from the link provided in the post on how to implement it.
I have just installed Ubuntu (9.10) and noted that in order to successfully run the trial off the CD I had to test in "safe graphics" mode. I have an NVIDIA GEforce 6600 GT card - which was discovered by Ubuntu in the first few minutes of the trial and so I activated the recommended driver and continued to test. After a successful trial I installed Ubuntu (dual partition Ubuntu / Windows XP), however, it seems the install didn't activate the required driver (as part of the process) and so I'm unable to get into my newly-installed Ubuntu at all. All I get is a flashing tty screen asking for my username and password - however it's erratic and won't recognise what I type. So - I'm stuck in a catch-22 as there doesn't seems to be a safe graphics mode option via the start (GRUB?) menu list.
I can get into the BIOS just fine but cannot find anything such as NX or Exucute Disable mode( on or off) Does anyone have any ideas? I contacted Acer support and they may be able to help only if I pay for their support. AS of now I have Ubuntu 10.4 installed and upgraded to 10.10 but have black screen with message about (NX) or Execute Disable in bios. The message says---This CPU is family 6, model 37, and has NX capabilities but is unable to use these protective features because the BIOS is configured to disable the capability. Please enable this in your BIOS. I have windows 7 professional on one partition and Ubuntu on the other partition. I can still access Ubuntu 10.4. but have the black screen on 10.10
I hope this is the right place to post to because I haven't found any other related forums.I'm working on an AMD opteron running Linux 2.6.28.6 I want to preload a hardware performance counter (register) with a value to have it overflow after a number of a specific event counts. As I understand, when the counter in the register overflows, an interrupt will be generated and handled by the appropriate interrupt handler. How can my user-level application get notified whenever the interrupt occurs? I want to obtain information on the instruction that caused the overflow. Is this possible? I think this is different than responding to signals with sigaction().
So I just recently got an HP pro 1005 all in one PC and tried to install Debian 8.2 on it through a bootable Uefi USB, however, when trying to install, there's always an error like this: "The attempt to mount a file system with type ext4 in LVM VG debian-vg, LV root at /failed."
Also, no matter how many times I completely wipe every partition, there's always this message at the start of the installation saying Windows is already installed as BIOS compatibility mode, and asks me if i still want to install as Uefi, I was wondering if that had anything to do with my error.
I checked the drives health and there wasn't any kind of problems, passed all the tests.
I am trying to figure out how to mask local timer interrupts on a specific core of a multicore system from within user space. The interrupts are causing latency spikes of 3-10u that we would like to remove. We are only running 1 thread on the core h everything shielded except for these timer interrupts. This thread makes no system calls and thus is never getting context switched out. I am not looking to turn them off entirely but rather turn them off, run my code, turn them on in a continuous loop. The thread runs in user space which we are hoping to maintain. We also have no desire to modify the kernel if possible. I've read about using spinlock_irqsave() but it appears (not positive) that it must be used within kernel space.
How do I use the proprietary graphics for my nvidia card?
I use KDE, and I've installed both kmod-nvidia and akmod-nvidia, and when I went to activate the special affects I ran into problems. I had to use Xrender for it to work at all (and that just went really slow) whereas OpenGL just made my screen go black, with a mouse and window borders if I alt+tabbed.
I reinstalled and only have the default video driver installed (nouveau or something like that) and I'm a bit scared to try prorprietary graphics without a step-by-step guide that works, which I haven't been able to find.
I've set up a triple boot system (Ubuntu Karmic, Windows Vista and OSX86 -- a patched OS X which works on a PC) on a Dell 9200 (C2D 2.13 GHz, 4GB RAM, nVidia G210). I sue Grub2 as the bootloader and update-grub picks up OS X and it boots without any problem.
However, although when booting OS X using its own Darwin bootloader, I can apply the boot option "Graphics Mode"="1680x1050x32" to ensure that I get the screen resolution that I want, when OS X boots from Grub2, the only resolution available is 1024x768 which is disappointing. I have tried adding gfxmode=1650x1050x32 to the OS X section of /boot/grub/grub.cfg in Ubuntu but this does nothing.
I just installed kubuntu 10.10 on my new netbook. I prefer the standard kde interface and want to know how to switch to it. For some reason it installed the netbook interface by default.
I'm running Fedora11 OS on my desktop.my HSPA USB modem(Prolink PHS101 HSPA modem)is not detected as communication device. it detected as a CD ROM. could you please tell me the way to make functioning of it in Fedora 11 how to switch to communication mode.
I'm having difficulty switching from GUI to console mode. I use ctrl-alt-f1 and the screen goes blank and I see a flashing cursor but I'm unable to do anything. I can switch back into GUI mode using ctrl-alt-f7. Also at times I see the word Ubuntu with 4 dots and 2 of them are orange if that's of any use. Like the initial boot loading screen.
I've tried going back to the default display drivers and that hasn't solved it. I'm using a CRT that's connected up to my display card via a VGA > DVI converter. *I've just checked and I can't get into recovery mode either
I've successfully install kvm with private network (nat) up running. I want to switch the kvm network using bridge mode (or host-interface), but do not success. env: nic iwl4965/ kernel 2.6.27.8/ debian etch upgrade to lenny/ kvm 0.9.1/ hardware hp 6910p The doc I follow up is at [URL] The way how i set it up is to modify /etc/network/interfaces by adding following section to enable br0
However, the problem is the guest os, which starts with -hda k1.img, can not access to the internet. Is there any step I miss? or it is because wireless does not support bridge (I've heard doc says that wireless does not support wireless bridge)?
i've been trying to load F15 on a HP DV4 (switchable ati/intel graphics, no hardware switch). the system boots from dvd fine, but gets stuck right after the starting anaconda message with a non blinking cursor on black screen and nothing happens after that.
Installed Ubuntu 10.10 on fresh HP dm4-1050so laptop and encountered problems, this is one of them. Noticed that ATI card is heating heavely with default installation and I would like disable it and switch to use Intel's GMA. Also tested ATI proprietary fglrx driver through Administration->Additional Drivers, after booting got empty screen so I switched back. Afterwards read from documentation that 5450 is not supported, so no wonder. So what is the simplest way of disabling ATI and using only Intel's gma? Here's what I got with lspci -v:
Code: 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 1469 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at c0000000 (64-bit, non-prefetchable) [size=4M]
I recently hooked my television up to my computer as a second monitor so that I can watch videos on it. However, I don't always want to be in dual monitor mode. I've found that running "gksudo nvidia-settings" allows me to switch between the two modes without restarting X if I change some settings around and click "apply".
Is there a way I could setup two scripts to handle this process? The main problem I'm encountering is the fact that I change all the settings through the nvidia-settings graphical interface; therefore, I have no idea what's actually happening behind the scenes, so I don't know how to go about putting the two scripts together (what commands to issue, etc.).
Since 13.37 I notice that vi needs the 'home' key to switch from input to command mode. I think this is only when I connect via Putty to the machine. When I am on local console it is still ESCape like it used to be. Does anyone know how to set it so that vi will switch from input to command mode using the ESCAPE key when using Putty?
Another vi question : When you edit htm files, vi goes automagically into some sort of html display mode. Ofcourse I never want that since all I do is edit the html in vi. So I need to go to command mode and type :normal everytime I want to edit html files. Where can you configure that vi (or vim) default to normal mode always?
<I see that vi links to elvis : > # ls -al /usr/bin/vi lrwxrwxrwx 1 root root 5 Oct 3 2009 /usr/bin/vi -> elvis*
I decided to use Debian for my system at work, and while trying to set up the system this weekend I've run into a major problem trying to start X11. I'm not very experienced with Linux, so there is probably going to be some huge gaps in my knowledge as I've only used Ubuntu on my netbook with only a little terminal work, so bear with me. As background info I'm using a Radeon HD 4350 and an nForce 4 board with an Athlon XP 3200 ( I think). Yeah it's some ghetto hardware but it's good enough for what I need to do at work.
Anyway, I successfully install Debian using disc 1 here, and did the Advanced Installation. As a note, I installed Debian once using the standard install, but I was trying to run a few X commands that I only found out after reinstalling need to have X-server running, which it obviously isn't in single user mode. This shouldn't be an issue since I rewrote the partition table and am not using the drive for anything else. After the install finished and I restarted the computer, after the kernel loaded my screen shows wither "Not Support!" or "Input not supported." depending on which monitor I'm using. The first message comes from a cheap Japanese tv so the engrish is understandable, but from what I can tell it's the same error message for both. First guide I tried following was this one. I completed all the steps, and my xorg.conf is currently set at those values. For people who don't want to read through the whole thing:
i did an update after a LONG time on my machine (there were like 77 updates) and when i restarted the computer, as reccomended, it booted up saying that ubuntu is gunna run in low graphics mode... apparently i am not able to use a window manager either, as became evident when i clicked on the "show desktop" button...
also there are no tabs for any of the open windows on my "start bar" (the lower bar across the screen... also i cant switch to different desktops anymore and i cant maximize/minize or drag windows like my web browser around (probably cause there isnt a window manager running)....
I have (not so recently) installed 10.04. It seems to randomly go into low graphics mode completely randomly i.e. using firefox, gimp, terminal.... not just with high graphics programs. A dialog will pop up and say that my devices are not detected/ configured properly. I then have to force shutdown..
In these days I install ubuntu 9.10 64bit on several notebook (Intel + AMD Switchable Graphics, NVIDIA Optimus Hybrid graphics), but the same problem is it can't boot ubuntu with graphic mode. I only can install it with text mode, and after installation, it still boot with text mode. I tried to execute startx, but failed to switch to graphics mode. I didn't see this issue with some notebooks with ATI/NVIDIA graphics, so I think this issue may relate with VBIOS VBE mode settings.
When I try to execute "startx" under the text mode, some error information appears as below. (EE) open /dev/fb0: No such file or directory (EE) No devices detected. Fatal server error: no screens found
I have Ubuntu 10.10 and when I boot my PC I can see the following message: Ubuntu is running in low graphics mode and Ubuntu stops booting. I can-t boot in it I can only use command line. I think I accidentally uninstalled some packages clicking at completelly removal at some ipod utillities in synaptic. How can I fix this?
I am having trouble installing Fedora 10 64-bit on my new laptop in graphics mode. Here's a link to the laptop: [URL] When I try and install, it says "X startup failed, falling back to text mode", and proceeds with text mode. I saw that people had this on some radeon cards, and they had to use the change the driver to boot with to fix it. I'm guessing my problem is similar, however my card is an Intel HD card. Is there a driver available that works for this card, or is it perhaps another problem?
My laptop is having graphics card problem ( dell vostro 1400 - gpu problem ). I am using only for browsing, it works only in windows safe mode with networking.
i have linux mint also (dual boot) would like to know how to run linux mint in low graphics mode?
I recently migrated from Gentoo Linux to openSuSE because I no longer have that much time to maintain the sane state of my system, and want my computer to just work when I need it.. So far openSuSE surprised me and I was able to configure my system almost completely without even touching the shell where I almost lived in the Gentoo days..
However, I'm not able to make openSuSE automatically detect my logitech BT dongle (as part of a dinovo keyboard and mouse set) and switch it from HID to HCI mode so I'm able to use bluetooth.
Then the dongle is switched to HCI mode, a bluetooth applet appears in gnome and I was able to pair with the keyboard, keypad, mouse and mobile phone
But I don't want to manually run that command each time, so I figured the best way is to let udev handle that (?).. As I didn't find any udev rules to perform such an action I tried creating one myself, however, I'm not sure that I'm doing it right /etc/udev/rules.d/70-hid2hci:
My problem is that I anyway cannot get to the text console when I have run the desktop environment. When I press Ctrl+Alt+Fx (where x - number of tty console), the video adapter doesn't send signal into monitor. Keyboard also stops reacting, only Magic SysRq Key works. The same result I can see when I turn off the desktop environment (I have uninstalled gdm) or kill X-server with the "kill -9" command. The only way to get to console (except window terminal) is remote connection via SSH.
The problem occurs only when I have run X-server. When I turn on the computer, I can see start messages. Since I've uninstalled gdm, I have also access to the console after I turn on my computer. I can normally switch between tty consoles, until I type "startx" command. Everything started when I've tryed to install non-free ATI video drivers. They practically worked, because I've had some problems with them (I just don't remember what problems), so I've uninstalled them and returned to the open. Then this problem apeeared. I tried to reinstall Xorg, change kernel (installed from repos), switch off the framebuffer, but it gave nothing.
I'm running Ubuntu 9.10. I tried a solution for a wifi problem (wasn't always connecting) and now when I reboot I get "Ubuntu is running in low graphics mode" along with a bunch of EE messages. When I click OK it gives me "Run Ubuntu in low-graphics mode for just one session." Which gets me back to the desktop.
I am getting the following upon booting up after upgrading from 9.10 to 10.04 Beta:
Ubuntu is running in low-graphics mode. The following encountered. You may need to update your configuration to solve this
(EE) intel(0):[drm] failed to set drm interface version (EE) intel(0):Failed to become DRM master (EE) intel(0):failed to get resources:Bad file descriptor (EE) intel(0:Kernel modesetting setup failed (EE) Screen(s) found, but none have a usable configuration.
I then press the OK button (no other option given). Then I'm presented a menu with the following options:
(x) Run Ubuntu in low-graphics mode for just one session ( ) Reconfigure graphics ( ) Troubleshoot the error ( ) Exit to console login ( ) Restart X
Cancel and OK buttons. I choose OK and the system seems to boot ok.
I'm not sure what is wrong or how to go about solving this one.
