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Holysword
l33t
Joined: 19 Nov 2006
Posts: 946
Location: Greece
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 Posted: Mon Jan 10, 2011 6:59 am Post subject: [SOLVED] No /dev/fb0 |
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Hi folks,
I found some other topics here with the same problem, but none of the solutions worked for me (most of them are incredible old too).
So, I followed this guide and got nowhere:
| Code: | ◢ perjanus ◣ ~ $ splash_manager --theme=livecd-2007.0 --cmd=set --tty=1
Can't open /dev/fb0 or /dev/fb/0
Error: Theme 'livecd-2007.0' doesn't seem to provide a config file for the current resolution ().
◢ perjanus ◣ ~ $ |
I am not worried now with the resolution problem, but with the missing /dev/fb0, which, well, actually, its missing. I have double/triple/multiple checked my kernel options, didn't find anything missing, but maybe there is something enabled but should be disabled.
Any ideas?
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"Nolite arbitrari quia venerim mittere pacem in terram non veni pacem mittere sed gladium" (Yeshua Ha Mashiach)
Last edited by Holysword on Wed Jan 19, 2011 2:36 pm; edited 1 time in total |
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Holysword
l33t
Joined: 19 Nov 2006
Posts: 946
Location: Greece
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| Posted: Wed Jan 19, 2011 2:36 pm Post subject: |
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Found the answer in this guide: http://en.gentoo-wiki.com/wiki/Framebuffer
In the other guide it is missing the part that tell you to enable uvesafb driver. After enabling it I have /dev/fb0.
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hal2050
n00b
Joined: 19 Jul 2008
Posts: 47
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| Posted: Thu Jan 20, 2011 8:27 pm Post subject: |
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i used to use uvesafb for about 10 (?) kernel versions for splashutils. but after upgrading to 2.6.37 uvesafb stopped working. as always i x-checked everything and everything seems to be configured correctly. but there's no /dev/fb*.
after looking into /var/log/dmesg i found the following errors:
| Code: | uvesafb: Getting VBE info block failed (eax=0x4f00, err=0)
uvesafb: vbe_init() failed with -22
uvesafb: probe of uvesafb.0 failed with error -22 |
google led me to this old bug report: https://bugs.gentoo.org/show_bug.cgi?id=196848
could this be some kind of regression or am i missing something? |
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Holysword
l33t
Joined: 19 Nov 2006
Posts: 946
Location: Greece
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| Posted: Fri Jan 21, 2011 2:43 pm Post subject: |
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| hal2050 wrote: | i used to use uvesafb for about 10 (?) kernel versions for splashutils. but after upgrading to 2.6.37 uvesafb stopped working. as always i x-checked everything and everything seems to be configured correctly. but there's no /dev/fb*.
after looking into /var/log/dmesg i found the following errors:
| Code: | uvesafb: Getting VBE info block failed (eax=0x4f00, err=0)
uvesafb: vbe_init() failed with -22
uvesafb: probe of uvesafb.0 failed with error -22 |
google led me to this old bug report: https://bugs.gentoo.org/show_bug.cgi?id=196848
could this be some kind of regression or am i missing something? |
Hard to tell from this old report (yeah, 2007 was a very good year indeed...), but I remember that once I had problems with framebuffer because I had something enabled that was supposed to be disabled - I even supposed that this was the case now.
Don't remember exactly what it was though.
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lxg
Veteran
Joined: 12 Nov 2005
Posts: 1019
Location: Aachen, Germany
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| Posted: Fri Jan 21, 2011 3:00 pm Post subject: |
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| hal2050 wrote: | | am i missing something? |
KMS? 
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hal2050
n00b
Joined: 19 Jul 2008
Posts: 47
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| Posted: Fri Jan 21, 2011 3:13 pm Post subject: |
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didn't use kms on my nvidia ion based htpc -> nvidia-drivers. 
edit:
for testing purposes i picked my 2.6.36-gentoo-r6 kernel and everything works as expected.
grep -i vesa /var/log/dmesg
| Code: | Kernel command line: root=/dev/sda2 quiet ro elevator=cfq console=tty1 video=uvesafb:ywrap,mtrr:3,1280x720-32@60 splash=silent,theme:xbmc-confluence-shiny initrd=../initramfs-bootsplash BOOT_IMAGE=../vmlinuz-2.6.36-gentoo-r6
uvesafb: NVIDIA Corporation, MCP79 Board - mcp7a-pm, Chip Rev , OEM: NVIDIA, VBE v3.0
uvesafb: protected mode interface info at c000:cbd0
uvesafb: pmi: set display start = c00ccc33, set palette = c00ccc8e
uvesafb: pmi: ports = 3b4 3b5 3ba 3c0 3c1 3c4 3c5 3c6 3c7 3c8 3c9 3cc 3ce 3cf 3d0 3d1 3d2 3d3 3d4 3d5 3da
uvesafb: VBIOS/hardware doesn't support DDC transfers
uvesafb: no monitor limits have been set, default refresh rate will be used
uvesafb: scrolling: ywrap using protected mode interface, yres_virtual=2048
uvesafb: framebuffer at 0xf7000000, mapped to 0xf8480000, using 10240k, total 14336k
fb0: VESA VGA frame buffer device |
this is really strange since i transfered my 2.6.36 config via "make oldconfig" to the 37 kernel series.
edit:
i ran a diff between my 36 and 37 config. don't know why, but
was disabled. after enabling it again /dev/fb0 is present again, so is the fbsplash.
therefore it's solved for me, too. |
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