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Grub vga modes 1920x1080

I've googled this matter to death. The fact is that I have an odd widescreen which supports x resolution. The basic problem is that grub seems to allow to set VGA modes in the bootline, which in itself is good, but the only 'official' values listed concern regular screens ie x Currently I'm using x as it's the second best thing It's quite impractical to have any smaller resolution than that, the font tend to grow almost larger than my screen.

So this gave no success. On to trying VGA modes. I've found a wide variety of values to set of from different forums, neither seemed to work or where just a wrong resolution. I know there are possible bootsplash scripts out there, like gensplash, usplash, bootsplash and whatever. I'm not sure if they managed to change the framebuffer into the correct mode for my screen, but it would seem a little awkward to install them only for that purpose. I had a lot of trouble trying to get a x framebuffer.

Maybe something similar could work for you. I think the other stuff is the critical stuff. Well, if you use vesafb this happens is you use arch binary kernels, in any flavourthen you can use two kinds of parameters with different kernels: 1 the vga parameter with arch standard kernel26 and any other binary kernel not including vesafb-tng patch: 2 the xXy-z k parameter above with bbeyond kernel, which includes the vesafb-tng patch.

You are never supposed to use both the parameters the unrelevant one is just ignored. However, in my past experience, the only possibility to support a wide screen framebuffer is to use the hardware specific framebuffer driver.

You need to configure and compile your own kernel. Each driver has its own options and the kernel docs are very lacking on this issue : in most cases but not always, e. I was never sure about the beyond kernel actually.

Kernel mode setting

Is there any reason to not install the beyond kernel, I mean, may it conflict with any packages etc? Either way it's definately worth a try. Ok, after giving the various combinations a couple of tries I can conclude that it did not work. I guess looking at the beyond kernel comes as the next natural step. I'm also trying to achieve this. I have a nvidia card and and LCD screen with x native resolution. Is it really necessary to compile our own kernel?

Googling points that way but all answers point to Gentoo and "they" compile everything! I'm still using x, but recently I used the GParted LiveCD and it surprised me when I saw the framebuffer on the screen's native resolution. I noticed on the boot screen a line with "udev loading module nvidiafb".Hi people, I wanted change my grub theme and have installed Grub Customizer. I had could change the themebut now the resolution in GRUB is wrong.

I tried with Grub Customizer change the resolution but nothing works. Then I tried modify manually grub. Someone can help me to change resolution?. I attach a picture. Thanks for reply RocknRolf.

And Yes, I did it I forget write it in my first post. But nothing works. I write this in case it helps to solve the problem. Instead press c to get to the console. There you issue videoinfo. It should display your supported resolutions. For example x would be 0x on the bladebook.

WhatsApp Image at I tried both: 0x and xx32 without quotations and then update-grub but not works. Thanks people for try help me. Do you checkyes. This topic was automatically closed 30 days after the last reply.

New replies are no longer allowed. ZeR0ByTe 27 October 1. RocknRolf 27 October 2. ZeR0ByTe 27 October 3. Thanks again and I hope find a solution.

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I would like to use Android-x86 2. I have downloaded VirtualBox and the ISO, and I've made a virtual machine with it, but I can't set the resolution to x or something similar. The following tutorial " Using the Android-x86 Port as your Emulator " suggests to insert:. When it boots, I have to press Enter to see the available options, but there is no x among them.

How can I get it to work? Start the VM 2. Translate the value to decimal notation for example hex is in decimal. Go to menu. Input the following:. Now it should look like this:.

I'd like to clarify one small gotcha here.

grub vga modes 1920x1080

VirtualBox recognizes these modes in order starting from 1 and if you skip a number, it will not recognize anything at or beyond the number you skipped. This caught me by surprise.

Verified the following on Virtualbox You get a screen similar to an 8" table. My custom videomode was "xx32" Look in the first entry as described before, this is the menu entry you would normally boot. I normally use nano as it works more easy for me. Does anyone know how to move it to an appropriate location? Learn more. Switch android x86 screen resolution Ask Question. Asked 8 years, 10 months ago.

grub vga modes 1920x1080

Active 1 month ago. Viewed k times. Active Oldest Votes. Perfect, this worked for me Just in case if somebody misses it! I've managed to do this, but if I change to bit or bit color depth it doesn't work.This HOWTO tries to implement a safe approach to the modification and customization of some important files for your operating system, so that you can restore the previous conditions easily.

Ok, we can start now. Reboot the system and when Grub2 is loaded switch to command line by pressing " c " key.

GRUB/Tips and tricks

At the grub prompt enter the command:. We can see a list of supported modes retrieved from our VGA bios extension; it's only a subset of all modes that should to match the capabilities of our monitor. Identify the mode we want to use for bootsplash inside this list, a good idea with LCD panel should be to choose our native maximum resolution.

Suppose, as an example, that our choice has fallen on the resolution of " xx32 ". We will making, for now, only temporary changes to our configuration, a simple reboot will restore our starting configuration. Press " ESC " key to go back to Grub2 menu, move over your "normal" Sabayon kernel entry and press " e " key in order to temporary modify the boot options.

Add, on top, a new line by pressing " Enter " containing:.

grub vga modes 1920x1080

Please note that if the color depth isn't set, seems that the highest VESA mode available will be used if doesn't, try with xx32 or the desired bpp. This is a key point of the proceedings because " vga " or " video " kernel parameter will conflict with " gfxpayload " statement above. If the bootsplash and the progress bar seems correctly visualized, we wait for the fully loaded system. If something is not working as we expect, we can try to change resolution by repeating from first step of procedure.

grub vga modes 1920x1080

While, if we are satisfied, continue to the next section in order to save our new configuration. Now add a line below containing our as soon as tested resolution for the bootsplash and ttys console :.

We can also use two different resolutions, among those as supported. Save the file and rebuild Grub2 configuration:. Jump to: navigationsearch. Refer to Grub2 documentation for further information GrubWiki. Navigation menu Personal tools Create account Log in. Namespaces Page Discussion. Views Read View source View history. This page was last modified on 1 Januaryat Privacy policy About Sabayon Wiki Disclaimers.Without --force you may get the below error and grub-setup will not setup its boot code in the partition boot sector:.

HOWTO: Using Custom Framebuffer Resolution with GRUB2

The sector locations of core. Unfortunately, the grub. In order to fix this issue the following commands:. You can then chainload GRUB's core. In GRUB it is possible, by default, to change the look of the menu. This video mode is passed by GRUB to the linux kernel via 'gfxpayload' so any visual configurations need this mode in order to be in effect.

For more information, refer to the GRUB gfxmode documentation. The gfxpayload property will make sure the kernel keeps the resolution. Sometimes for Intel graphic adapters neither hwinfo --framebuffer nor videoinfo will show you the desired resolution.

In this case you can use the resolution hack. This hack will temporarily modify video BIOS and add needed resolution. See resolution's home page. The package can be found here: resolution AUR. First you need to find a video mode which will be modified later. For that we need the GRUB command shell:. GRUB comes with support for background images and bitmap fonts in pf2 format. The unifont font is included in the grub package under the filename unicode. Image formats supported include tga, png and jpeg, providing the correct modules are loaded.

The maximum supported resolution depends on your hardware. Make sure you have set up the proper framebuffer resolution. Re-generate grub. If adding the splash image was successful, the user will see "Found background image If this phrase is not seen, the image information was probably not incorporated into the grub. You can set the menu colors in GRUB. Here is an example:. You can also adjust whether you want to see the timeout counter. Here are the lines you need to add to enable this feature, the timeout has been set to five seconds and to be shown to the user:.

Another option if you want to keep the framebuffer in GRUB is to revert to text mode just before starting the kernel. Advantages are covered up in the above linked article. It is possible to use labels, human-readable strings attached to file systems, by using the --label option to search. First of all, label your existing partition:. To do this, run the command grub-mkpasswd-pbkdf2.This is the traditional method of changing screen resolution using the Linux kernel boot parameter.

It will work on CentOS 7 and older Linux distributions very well. The vga kernel boot parameter accepts a code which represents the screen resolution. Each of the supported screen resolution on your monitor has a unique decimal number.

Note that, the line that loads the kernel starts with linux. As you can see, all the supported screen resolutions and a hexadecimal code for each screen resolution is listed. To do that, you have to modify the GRUB configuration files on your computer. When you set it as the default on the GRUB configuration file, you have to change the hexadecimal code to an equivalent decimal code. GRUB configuration files should be updated.

Now, the next time you boot, the new screen resolution should be applied. On newer version of GRUB, the screen resolution is set using gfxpayload.

So, the vga parameter may not work correctly. If it is the case for you, then this section is for you. As you can see, all the supported screen resolutions are displayed.

The output is very long, so, it uses the pager. As you can see, more screen resolutions are displayed. Just remember the screen resolution. For example, if you want to set the screen resolution xx32then this is what you have to put in the GRUB configuration file.

How to enable Low Resolution Video Mode (VGA) on Windows 10 - The easy way!

Very simple. In order to set the screen resolution, open the GRUB configuration file with the following command:. The configuration file should be opened. The GRUB configuration files should be updated. The next time you start your computer, the new screen resolution should be applied. Thanks for reading this article. I was born in Bangladesh. There are times when you boot into your favorite Linux distribution and the display resolution is set incorrectly.See Vesa Information in Bochs thread for more info.

Also read about Bochs Graphics Adaptor. VESA stopped assigning codes for video modes long ago -- instead they standardized a much better solution: you can query the video card for what modes it supports, and query it about the attributes of each mode.

In your OS, you can have a function that you call with a desired width, height, and depth, and it returns the video mode number for it or the closest match. Then, just set that mode. Here's a sample code, assuming you have a VirtualMonitor already Basically, you will scan the 'modes list' referenced by the VbeInfoBlock. You can then compare width, height and colordepth of each mode with the desired one. There's some mistakes that beginners seem to make fairly often when they first start working with VBE.

In VBE 2. Despite this, it's still possible to find obsolete information on the internet suggesting to use these old standard mode numbers. People tend to assume that pixel data is contiguous e. This isn't always the case, and for a variety of reasons there may be padding between lines e. Note that for VBE 3. The first one is used when the video mode is setup for bank switching and the second one is used when linear frame buffer is being used.

For older versions of VBE there is no "bytes between lines for linear frame buffer" value, and the "bytes between lines for bank switched" value is used for both bank switching and linear frame buffer.

Usually pixel data is in "RGB" format, but this isn't always the case. For some colour depths there's "unused" bits in the pixel data one "unused" bit per pixel in bpp modes, and 8 "unused" bits per pixel for bpp modes. These unused bits may actually be used by some video cards for a variety of extra features.

We all like pretty graphics and high resolution video modes. Unfortunately, if VBE says that a video mode is supported by the video card it does not mean that the video mode is also supported by the monitor.

For all other video modes you should either use EDID to find out if the monitor supports the video mode's timing or notor provide a way for the user to test the video mode and change it if it doesn't work.

This is the approach used by Windows, with a dialog box appearing with the option to accept or revert. No action within 15 seconds reverts. Using EDID for this purpose is complicated. Unless you provide a "CRTC information block" structure when you set the video mode you can't be entirely sure what timing the video card will use; and only some video cards that support VBE 3.

For video modes with lower horizontal resolutions the video card sends the each pixel twice, and for video modes with lower vertical resolutions the video card sends the each row of pixels twice called "double scanning" ; and in both cases the video timing is the same as it would be for the corresponding higher resolution video mode.

This gives the following list of "safe" resolutions:. Reading from the video memory is slooow! Use double buffering instead. Jump to: navigationsearch. Categories : Video FAQ. Personal tools Log in. Namespaces Page Discussion. Views Read View source View history. About This site Joining Editing help Recent changes. In other languages Deutsch.


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