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Sixtiz
n00b
Joined: 09 Oct 2002
Posts: 56
Location: Australia
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 Posted: Thu Jan 16, 2003 1:31 pm Post subject: About the framebuffer logo |
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Hi everybody !
Is there a special command to show / hide the framebuffer logo ?
I noticed that it disappears during boot, I don't know when exactly (just before entering the defaut runlevel I think).
Is it possible to re-display it later ? Or to prevent it from disappearing ?
I have a sparcstation running a debian 3.0 and on this station the logo never disappears, so I guess there's a way to control it... |
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charlieg
Advocate
Joined: 30 Jul 2002
Posts: 2149
Location: Manchester UK
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| Posted: Thu Jan 16, 2003 2:01 pm Post subject: hmm |
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some people can't read.
(not a support forum)
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cyfred
Retired Dev
Joined: 23 Aug 2002
Posts: 596
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| Posted: Thu Jan 16, 2003 2:05 pm Post subject: |
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Be nice.
Framebuffer options and the like are controlled by the kernel AFAIK.
To get the little pic to stay there permanently the source either has to be changed or the gentoo people have changed it to remove the image, so to maximise the CLI screen lines.
Which kernel are you using?
Look at the differences between the Debian fb headers and the Gentoo ones. |
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pjp
Administrator
Joined: 16 Apr 2002
Posts: 20067
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| Posted: Thu Jan 16, 2003 3:05 pm Post subject: |
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Moved from Documentation, Tips & Tricks.
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Sixtiz
n00b
Joined: 09 Oct 2002
Posts: 56
Location: Australia
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| Posted: Thu Jan 16, 2003 11:23 pm Post subject: |
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| I know that the image is included un the kernel, I wonder if there's a hard-coded timout which makes the logo disappear or is there a way to tell the kernel to show / hide the logo while the system is running, for example via a /proc/sys entry... |
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cyfred
Retired Dev
Joined: 23 Aug 2002
Posts: 596
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| Posted: Fri Jan 17, 2003 3:16 am Post subject: |
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I just did some grepping and reading through the kernel, and it looks like the image is set to be overriden after a certain number of lines, 80.
Ive tried changing this setting and am recompiling currently. So will post results in a little while.
The probable reason that the logo disappears is because the kernel defaults to "redraw" scrolling (which when the buffer fills, returns to the start and writes from there, going over the image). The documentation points to several other methods either ywrap or ypan which write to the screen slightly differently. Failing my simple kernel hack I will look at these too file is from /usr/src/linux/Documentation/fb/vesafb.txt (unless you use a specific other). |
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cyfred
Retired Dev
Joined: 23 Aug 2002
Posts: 596
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| Posted: Fri Jan 17, 2003 3:50 am Post subject: |
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Well the hack didnt work, but it did allow me to increase the size of the image that was displayed. For those intersted you need to adjust both the LOGO_W and LOGO_H values in /usr/src/linux/drivers/video/fbcon.c currently they are set to 80 each which gives you 80 pixels, or 5 lines (16 pixel lines).
I changed these values to 200 a piece and the buffer still worked optimally with a 200 x 200 pixel image.
In regards to modifying the scroll method, ypan didnt work, and was unusable. ywrap doesnt seem to work either, but what I have noticed is that the image disappears when the keymod map is applied, or maybe just before.
In fact an complete new buffer seems to be formed at this time... Im still investigating this though. |
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mr_neutron
Tux's lil' helper
Joined: 05 Jan 2003
Posts: 124
Location: Germany
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| Posted: Fri Jan 17, 2003 11:59 am Post subject: |
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I just did some grepping and reading through the kernel, and it looks like the image is set to be overriden after a certain number of lines, 80.
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hmm... that's interesting, because since I changed the logo from "Larry the cow"[*] to "powered by gentoo" during my last kernel re-configuration, the logo does not disappear. Which is definitely not a good thing because it messes up the console when using 'less' or scrolling back with SHIFT+PGUP, even CTRL-L does not help.
I did not change any framebuffer-related kernel options besides the logo, so the reason seems to be in the logo itself, but I could not find the actual logo files under /usr/src/linux.
[*] don't want to offend Larry the cow  , but the logo looks a little crumbly. |
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cyfred
Retired Dev
Joined: 23 Aug 2002
Posts: 596
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| Posted: Fri Jan 17, 2003 1:09 pm Post subject: |
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| mr_neutron wrote: |
hmm... that's interesting, because since I changed the logo from "Larry the cow"[*] to "powered by gentoo" during my last kernel re-configuration, the logo does not disappear. Which is definitely not a good thing because it messes up the console when using 'less' or scrolling back with SHIFT+PGUP, even CTRL-L does not help. |
Hmmmm what kernel options did you enable in the frame buffer section?
Which driver, etc... |
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mr_neutron
Tux's lil' helper
Joined: 05 Jan 2003
Posts: 124
Location: Germany
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| Posted: Fri Jan 17, 2003 3:11 pm Post subject: |
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CONFIG_FB=y
# CONFIG_FB_LOGO_TUX is not set
# CONFIG_FB_LOGO_LARRY is not set
# CONFIG_FB_LOGO_GENTOO is not set
CONFIG_FB_LOGO_POWEREDBY=y
# CONFIG_FB_RIVA is not set
# CONFIG_FB_CLGEN is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CYBER2000 is not set
CONFIG_FB_VESA=y
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FBCON_ADVANCED is not set
CONFIG_FBCON_CFB8=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_CFB24=y
CONFIG_FBCON_CFB32=y
# CONFIG_FBCON_FONTWIDTH8_ONLY is not set
# CONFIG_FBCON_FONTS is not set
This is not a big problem. I'll have to recompile the kernel someday, then I'll try another logo. Most of the time, I'm using X anyway. |
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cyfred
Retired Dev
Joined: 23 Aug 2002
Posts: 596
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| Posted: Sat Jan 18, 2003 12:40 am Post subject: |
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Its not really a big issue no, and considering you are in X most of the time there is even less to be concerned with. But try adding this line below the VESA one.
CONFIG_FB_VESA=y
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_HGA is not set
CONFIG_VIDEO_SELECT=y
.
.
.
See what happens then. Im not sure which menuconfig option produces this setting but thats the only difference between mine and your .config files. |
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mr_neutron
Tux's lil' helper
Joined: 05 Jan 2003
Posts: 124
Location: Germany
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| Posted: Sat Jan 18, 2003 2:09 pm Post subject: |
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| Quote: |
CONFIG_VIDEO_SELECT=y
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I have that enabled, too. What I posted before was the output of
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grep _FB_ /usr/src/linux/.config
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I was just too lazy to check if this would miss some framebuffer related options. |
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