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JC99
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PostPosted: Tue Aug 07, 2012 7:00 pm    Post subject: Grub resolutions Reply with quote

Hello,

I've been using an old 19" CRT but I think its time to upgrade to a widescreen. I am using grub 0.97-r10.

Right now my grub kernel line says vga=791 which is 1024x768. Is there a vga= value for 1920x1080?

Thanks
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Gusar
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PostPosted: Tue Aug 07, 2012 7:49 pm    Post subject: Reply with quote

That depends 100% on your graphic card. Each may have a different number, if it provides one for 1920x1080 at all (many don't).
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JC99
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PostPosted: Tue Aug 07, 2012 9:17 pm    Post subject: Reply with quote

This is my video card...

Quote:
lspci
05:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 210] (rev a2)
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Gusar
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PostPosted: Tue Aug 07, 2012 9:26 pm    Post subject: Reply with quote

You need to actually check what's in the vbios of the card. Do a forum search, this has come up tons of times in the past.
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gerard82
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PostPosted: Tue Aug 07, 2012 9:26 pm    Post subject: Reply with quote

Change the kernel line in grub to read vga=ask.
You can then try the different resolutions offered.
I have a GT200 card and my monitor is 1920x1200.
My kernel line has vga=0x31b,how this translates to decimal I don't know.
Gerard.
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JC99
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PostPosted: Wed Aug 08, 2012 1:27 am    Post subject: Reply with quote

Came across this article which states the available resolutions. 1920x1080 isn't on the list so it seems it's not possible.
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Gusar
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PostPosted: Wed Aug 08, 2012 7:39 am    Post subject: Reply with quote

That list is meaningless for anything but actual vesa resolutions (those listed in black), the article itself says so. You need to check the vbios of your card. No article will tell you what's in there, only actually checking will.
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Martux
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PostPosted: Wed Aug 08, 2012 5:14 pm    Post subject: Reply with quote

You can use hwinfo for that.
Code:

hwinfo --framebuffer

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longshot
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PostPosted: Wed Aug 15, 2012 1:13 am    Post subject: Reply with quote

Martux wrote:
You can use hwinfo for that.
Code:

hwinfo --framebuffer


For me that gives highest resolution of 800x600, and doesn't list any of the higher resolutions available. I'm (now) using grub2 and running vbeinfo(?) from within grub reports them.
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Martux
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PostPosted: Wed Aug 15, 2012 1:56 am    Post subject: Reply with quote

Just out of interest, does that report higher resolutions? Because I can also only set non-native resolutions.
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