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On Tue, Mar 2, 2010 at 4:55 PM, Harry Putnam <reader@×××××××.com> wrote: |
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> For quite a long time I've been using things like: |
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> vga=0x31A |
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> |
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> On the kernel line in grub.conf |
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> |
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> Its a hexidecimal system drawn info in this (partial) chart I found |
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> somewhere in the kernel documentation long ago. |
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> |
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> ## 640x480 800x600 1024x768 1280x1024 |
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> ## 256 0x301 0x303 0x305 0x307 |
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> ## 32k 0x310 0x313 0x316 0x319 |
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> ## 64k 0x311 0x314 0x317 0x31A |
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> ## 16M 0x312 0x315 0x318 0x31B |
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> |
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> I've used kernel lines like below in grub.conf: |
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> (asterisks added) |
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> kernel /vmlinuz root=/dev/hda5 ** vga=0x31b ** video=vesfb:mtrr:3,ywrap |
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> |
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> For a very long time. (On occasion I've needed a smaller resolution |
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> and used 0x317) |
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> |
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> But on two recent installs of gentoo as vmware guests, that kind of |
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> entry isn't doing any good and I'm still being prompted to make a |
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> choice. |
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> |
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> When I hit <enter> as directed a largish chart of what look to be |
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> octal based settings, flashes by and only the last portion of it |
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> remains visible. |
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> |
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> It has choices like 340, 341 and many other three digit offerings from |
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> a large chart that shows the resolutions you get with the 3 digit |
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> choices. |
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> |
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> I was unable to find this chart by grepping in the kerne//Documentation |
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> directory. |
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> |
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> Where does the boot process access that chart? |
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> |
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> And why is it that the hex system is ignored and this other system |
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> offered at boot? |
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> |
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> I'm successfully using the hex system on my main gentoo machine... but on |
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> the two recently installed gentoo vmware guests it doesn't work. |
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> |
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> It may be relevant that these installs are console only... no X. |
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|
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From linux/Documentation/svga.txt: |
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|
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** Short intro for the impatient: Just use vga=ask for the first time, |
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** enter `scan' on the video mode prompt, pick the mode you want to use, |
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** remember its mode ID (the four-digit hexadecimal number) and then |
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** set the vga parameter to this number (converted to decimal first). |
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|
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HTH :) |