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  1. #31
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    use vga=ask to get a list of supported vesa modes, including widescreen ones

  2. #32
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    I also figured that would work but It doesnt give any options for widescreen resolutions.
    Do i have to get an updated or patched vesa fb driver.

  3. #33
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    Quote Originally Posted by TheIcebreaker
    I also figured that would work but It doesnt give any options for widescreen resolutions.
    Do i have to get an updated or patched vesa fb driver.
    Probably not a supported mode then.
    You can try vbetest, to make sure, run as root in a console window. it will list supported vesa modes. you need to add 512 to the mode number for the vga= parameter in grub.conf. eg On my 1280x800 laptop I get

    Code:
    [root@localhost ~]# vbetest
    VBE Version 3.0
    NVIDIA
    [256] 640x400 (256 color palette)
    [257] 640x480 (256 color palette)
    [259] 800x600 (256 color palette)
    [261] 1024x768 (256 color palette)
    [270] 320x200 (5:6:5)
    [271] 320x200 (8:8:8)
    [273] 640x480 (5:6:5)
    [274] 640x480 (8:8:8)
    [276] 800x600 (5:6:5)
    [277] 800x600 (8:8:8)
    [279] 1024x768 (5:6:5)
    [280] 1024x768 (8:8:8)
    [304] 320x200 (256 color palette)
    [305] 320x400 (256 color palette)
    [306] 320x400 (5:6:5)
    [307] 320x400 (8:8:8)
    [308] 320x240 (256 color palette)
    [309] 320x240 (5:6:5)
    [310] 320x240 (8:8:8)
    [317] 640x400 (5:6:5)
    [318] 640x400 (8:8:8)
    [352] 1280x800 (256 color palette)
    [353] 1280x800 (8:8:8)
    [354] 768x480 (256 color palette)
    Type a mode number, or 'q' to quit -
    mode 353 is 24bit widescreen so I set vga=865 (353+512). Not all widescreen modes are supported.
    Last edited by sideways; 1st November 2008 at 02:26 PM.

  4. #34
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    You can try vbetest, to make sure, run as root in a console window. it will list supported vesa modes. You need to add 512 to the mode number for the vga= parameter in grub.conf.
    You may need to go through a few hoops to get vbetest working. Here's what I had to do:
    (all as root)

    Code:
    yum install vbetest
    Because of the way SELinux is acting for me I had to do this in a console window to get results:

    Code:
    chcon -t unconfined_execmem_exec_t '/usr/sbin/vbetest'
    
    setsebool -P allow_unconfined_mmap_low 1
    
    vbtest
    Linux User #456254

    Fedora 14 desktop on:

    BioStar MCP6P-M2 Motherboard * NVIDIA GeForce 6150 / nForce 430 Video * AMD Sempron LE1100 1.9GHZ 256KB CPU * 1GB PC4200 DDR2 RAM * 160GB Serial ATA HD * 320 GB WD IDE HD * SATA2

  5. #35
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    Well I tried that and it does not list any of the widescreen modes.
    The question now is can I do anything about it.

  6. #36
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    Quote Originally Posted by TheIcebreaker
    Well I tried that and it does not list any of the widescreen modes.
    The question now is can I do anything about it.
    Not easily. You could try another framebuffer driver, intelfb, nvidiafb, radeonfb etc. They're compiled as modules in fedora (not into the kernel itself), you can check with
    Code:
    grep FB_INTEL /boot/config-$(uname -r)
    or grep for FB_NVIDIA, FB_RADEON etc. it'll probably say '=m', whereas CONFIG_FB_VESA=y, the m means module the y means compiled in.

    In that case you'll need to recreate the initrd including the relevant framebuffer driver, seee 'man mkinitrd' specifically the --with option), then instead of 'vga=' you use something like 'video=intelfb:mode=1024x768-32@60'

    It may not help with the widescreen modes, and in some cases may interfere with the Xorg Driver (nvidiafb is known to have some issues here)

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