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Le 16/08/2013 11:15, Darac Marjal a écrit : > On Fri, Aug 16, 2013 at 11:02:20AM +0200, François Patte wrote: >> Bonjour, >> >> I tried to change the screen resolution and the splash screen in grub: >> >> 1- edited /etc/default/grub >> GRUB_GFXMODE=1280x1024 > That should work. > >> GRUB_BACKGROUND="/usr/share/images/grub/Windbuchencom.tga" >> >> 2- run grub-update (it says that it has found the image, then done...) > The correct command is "update-grub" or "update-grub2" (they're > essentially the same). > >> 3- rebooted and..... nothing has changed! Resolution is still ugly and >> no splashscreen (the splashscreen is for fun, I don't need it) But I >> want to change the resolution (it is the default resolution of my screens) > It's possible that grub can't switch to the resolution. Many graphics > cards allow access to the basic VGA, SuperVGA etc modes (640x480, > 800x600, 1024x768) through the VESA BIOS. To get higher resolutions > (including, perhaps, the native mode of an LCD panel) requires the full > driver. > >> 4- I had a look to the file /boot/grub/grub.cfg >> The location of the image had been wrongly written: >> share/images/grub/Windbuchencom.tga but the resolution is correctly set. > "share/images..." probably indicates you've got /usr on a separate > partition. Remember that grub doesn't use a full unix-style tree, but > uses a forest (a bit more like Windows, really) of individual > partitions. So the TGA file would likely be in (hd1,2)share/images... or > similar. Thanks for your answer. Yes /usr is on a separate partition; shall put (hd1,2)share/images... in /etc/default/grub? And how to find the correct numbers? /usr is on /dev/sda2, but it is a a raid array, is grub able to read that? >> What to do? >> >> In /etc/default/grub it is recommended to check the resolution using >> vbeinfo, I have no vbeinfo program and I cannot find one, what is the >> package with this program? > That would be the "grub-pc" or equivalent package. Basically, the > instruction is to boot into grub press 'c' at the menu (to give you a > command line) then enter "set pager=1" (return) "vbeinfo" (return). OK, that was useful, 1280x1024 is lIsted, but it does not work, I tried 1024x768 without any success. And of course I made a typo in the mail, I ran "update-grub" (and not grub-update). -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)1 8394 5849 http://www.math-info.univ-paris5.fr/~patte -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)1 8394 5849 http://www.math-info.univ-paris5.fr/~patte |
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