From: Felix Miata <mrmazda@earthlink.net>
To: intel-gfx@lists.freedesktop.org
Subject: Re: Lenovo X60 with i945: Setting resolution in GRUB to 1024×768
Date: Sun, 18 Jan 2015 18:46:20 -0500 [thread overview]
Message-ID: <54BC45CC.8070808@earthlink.net> (raw)
In-Reply-To: <1421622069.4552.26.camel@users.sourceforge.net>
Paul Menzel composed on 2015-01-19 00:01 (UTC+0100):
> Am Sonntag, den 18.01.2015, 16:56 -0500 schrieb Felix Miata:
>> Paul Menzel composed on 2015-01-18 12:20 (UTC+0100):
>> > Unfortunately that does not have an effect and the
>> > resolution is only 640a×480.
>> IIRC, I've solved this problem in the distant past by in BIOS setup changing
>> memory size reserved for video controller from 1M to 8M.
> Unfortunately I was unable to find such a configuration option in the
> BIOS menu.
I just rebooted a Grub Legacy/openSUSE i915 system after changing its BIOS
video setting from 8M to 1M. Grub with gfxboot starts in 640x480 mode instead
of 800x600, and the combination of vga=791 and video=1024x768@60 on cmdline
generates an unsupported BIOS mode message from vga=791. Trying again leaving
off vga=791, Grub again appears in 640x480, and boot proceeds in that mode
until the kernel switches framebuffer to 1024x768. Restoring BIOS to 8M
restores 1024x768 normalcy here.
It appears that Grub dev is right about your BIOS; 1024x768 is not available
until after the BIOS releases control, and probably until Grub2 turns the
screen over to the kernel. IOW, your BIOS is your problem.
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
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prev parent reply other threads:[~2015-01-18 23:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-18 11:20 Lenovo X60 with i945: Setting resolution in GRUB to 1024×768 Paul Menzel
2015-01-18 21:56 ` Felix Miata
2015-01-18 23:01 ` Paul Menzel
2015-01-18 23:46 ` Felix Miata [this message]
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