Re: grub (vga = ) parameters
On Tue, 2002-09-24 at 04:24, Keith Morse wrote: On 23 Sep 2002, Bob Raymond wrote: That should be 1024x768 at 16 bit color. I use 794, which is 1280x1024 at 16 bit color. Oo. slicker still. But.. How did you know? Trial and error? 792 I knew from using SuSE- when I selected 1024x768 on the install of 7.3, I looked at /etc/lilo.conf aftewards. vga was set to 792. I honestly can't remember how I got 794, and I'd really like to take advantage of my 17 in. Trinitron and my great high-schooler's eyes, and set it to 1600x1200 with 16 bit color, maybe even 24 or 32 if I can figure it out. I run my desktop at 1600x1200 with 24 bit color, anyway. Does someone want me to research this a bit more and write a step by step for it with a nice index of all the modes say from 640x480 to 2048x1536 (the current high point for most consumer graphics cards, not that I'm sure vesafb goes that high)? Bob Raymond ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
Re: grub (vga = ) parameters
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 24 Sep 2002 11:24:20 +0100, Bob Raymond wrote: On Tue, 2002-09-24 at 04:24, Keith Morse wrote: On 23 Sep 2002, Bob Raymond wrote: That should be 1024x768 at 16 bit color. I use 794, which is 1280x1024 at 16 bit color. Oo. slicker still. But.. How did you know? Trial and error? 792 I knew from using SuSE- when I selected 1024x768 on the install of 7.3, I looked at /etc/lilo.conf aftewards. vga was set to 792. I honestly can't remember how I got 794, and I'd really like to take advantage of my 17 in. Trinitron and my great high-schooler's eyes, and set it to 1600x1200 with 16 bit color, maybe even 24 or 32 if I can figure it out. I run my desktop at 1600x1200 with 24 bit color, anyway. Does someone want me to research this a bit more and write a step by step for it with a nice index of all the modes say from 640x480 to 2048x1536 (the current high point for most consumer graphics cards, not that I'm sure vesafb goes that high)? Bob Raymond - From Documentation/fb/vesafb.txt (in the kernel src dir): How to use it? == Switching modes is done using the vga=... boot parameter. Read Documentation/svga.txt for details. You should compile in both vgacon (for text mode) and vesafb (for graphics mode). Which of them takes over the console depends on whenever the specified mode is text or graphics. The graphic modes are NOT in the list which you get if you boot with vga=ask and hit return. The mode you wish to use is derived from the VESA mode number. Here are those VESA mode numbers: | 640x480 800x600 1024x768 1280x1024 - +- 256 | 0x1010x1030x1050x107 32k | 0x1100x1130x1160x119 64k | 0x1110x1140x1170x11A 16M | 0x1120x1150x1180x11B The video mode number of the Linux kernel is the VESA mode number plus 0x200. Linux_kernel_mode_number = VESA_mode_number + 0x200 So the table for the Kernel mode numbers are: | 640x480 800x600 1024x768 1280x1024 - +- 256 | 0x3010x3030x3050x307 32k | 0x3100x3130x3160x319 64k | 0x3110x3140x3170x31A 16M | 0x3120x3150x3180x31B To enable one of those modes you have to specify vga=ask in the lilo.conf file and rerun LILO. Then you can type in the desired mode at the vga=ask prompt. For example if you like to use 1024x768x256 colors you have to say 305 at this prompt. If this does not work, this might be because your BIOS does not support linear framebuffers or because it does not support this mode at all. Even if your board does, it might be the BIOS which does not. VESA BIOS Extensions v2.0 are required, 1.2 is NOT sufficient. You will get a bad mode number message if something goes wrong. 1. Note: LILO cannot handle hex, for booting directly with vga=mode-number you have to transform the numbers to decimal. 2. Note: Some newer versions of LILO appear to work with those hex values, if you set the 0x in front of the numbers. Just convert those hex numbers to decimal and you'll find where that 792/794 came from ;) Bye! Federico Voges Socio gerente Intrasoft Malabia 2137 14 A (1425) Buenos Aires Argentina Te/Fax: 54-11-4833-5182 e-mail: [EMAIL PROTECTED] Web: http://www.intrasoft.com.ar PGP Public Key Fingerprint: A536 4595 EB6F D197 FBC1 5C3A 145C 2516 -BEGIN PGP SIGNATURE- Version: PGPsdk version 1.7.1 (C) 1997-1999 Network Associates, Inc. and its affiliated companies. iQA/AwUBPZCHuhRcJRaVKt4XEQJ6YgCfYY15hLwcFBl0ecGz3GcMlHa1WdYAoOlP LSCmuVtZPw65XhLlLAumij6W =7stH -END PGP SIGNATURE- ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
Re: grub (vga = ) parameters
On 21 Sep 2002, Bob Raymond wrote: On Sat, 2002-09-21 at 19:28, Keith Morse wrote: Just trying to find documentation where the different modes are defined. /usr/src/linux/Documentation/fb/modedb.txt substitute /usr/src/linux for wherever your kernel sources happen to be. You might want to poke around the other files in the fb directory while you're at it. Thanks. But I'm still not finding what the actual numbers mean. For example, I use vga=792 on this particular host. Probably picked up that number from a posting on UseNet. But I don't know what video mode it represents. The grub documentation refers to /usr/src/linux/Documentation/kernel-parameters.txt which in turn refers to /usr/src/linux/Documentation/i386/boot.txt. None of which have any specifics. I found reference to /usr/src/linux/Documentation/fb/vesafb.txt which has some info, though not much in the way of mode definitions. It makes mention of /usr/src/linux/Documentation/svga.txt, which agains tantalizes, but does not deliver. 792 is 0x318 hex but I could not back track how this number was derived. On Google, vga=792 is found many times. I'm assuming it's the equivalent of 1024x768. It does work well and RedHat's init scripts don't muck it up as they do when using vga=ask and choosing a video mode there. ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
Re: grub (vga = ) parameters
On Mon, 2002-09-23 at 17:15, Keith Morse wrote: On 21 Sep 2002, Bob Raymond wrote: On Sat, 2002-09-21 at 19:28, Keith Morse wrote: Just trying to find documentation where the different modes are defined. /usr/src/linux/Documentation/fb/modedb.txt substitute /usr/src/linux for wherever your kernel sources happen to be. You might want to poke around the other files in the fb directory while you're at it. Thanks. But I'm still not finding what the actual numbers mean. For example, I use vga=792 on this particular host. Probably picked up that number from a posting on UseNet. But I don't know what video mode it represents. The grub documentation refers to /usr/src/linux/Documentation/kernel-parameters.txt which in turn refers to /usr/src/linux/Documentation/i386/boot.txt. None of which have any specifics. I found reference to /usr/src/linux/Documentation/fb/vesafb.txt which has some info, though not much in the way of mode definitions. It makes mention of /usr/src/linux/Documentation/svga.txt, which agains tantalizes, but does not deliver. 792 is 0x318 hex but I could not back track how this number was derived. On Google, vga=792 is found many times. I'm assuming it's the equivalent of 1024x768. It does work well and RedHat's init scripts don't muck it up as they do when using vga=ask and choosing a video mode there. That should be 1024x768 at 16 bit color. I use 794, which is 1280x1024 at 16 bit color. ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
Re: grub (vga = ) parameters
On 23 Sep 2002, Bob Raymond wrote: That should be 1024x768 at 16 bit color. I use 794, which is 1280x1024 at 16 bit color. Oo. slicker still. But.. How did you know? Trial and error? ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
grub (vga = ) parameters
Just trying to find documentation where the different modes are defined. ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
Re: grub (vga = ) parameters
On Sat, 2002-09-21 at 19:28, Keith Morse wrote: Just trying to find documentation where the different modes are defined. /usr/src/linux/Documentation/fb/modedb.txt substitute /usr/src/linux for wherever your kernel sources happen to be. You might want to poke around the other files in the fb directory while you're at it. ___ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc - http://www.linux-sxs.org/mailman/listinfo/linux-users
