I have a small test program using SDL. It works in X11 on Linux. I run
xorg in 1920x1200, which is the resolution of my display. I can run the
test program in a window or fullscreen at 1920x1200. When I switch to a
virtual terminal (Ctrl+Alt+F3) and try to run my test program I get this
error:
Couldn’t set 1920x1200x32 video mode: No video mode large enough for
1920x1200
The test program works on virtual terminal 3 for resolutions up to
1408x1056 but anything above that fails. Here is some output from dmesg
when Linux starts:
radeonfb: Retreived PLL infos from BIOS
radeonfb: Reference=27.00 MHz (RefDiv=6) Memory=337.00 Mhz,
System=243.00 MHz
radeonfb: PLL min 20000 max 35000
radeonfb: Reversed DACs detected
radeonfb: Reversed TMDS detected
Non-DDC laptop panel detected
radeonfb: Monitor 1 type LCD found
radeonfb: Monitor 2 type no found
radeonfb: panel ID string: W3866^F154U1
radeonfb: detected LVDS panel size from BIOS: 1920x1200
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 240x75
radeonfb (0000:01:00.0): ATI Radeon NP
radeonfb: detected LVDS panel size from BIOS: 1920x1200
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 240x75
radeonfb (0000:01:00.0): ATI Radeon NP
How should I fix the problem?
Is there some way to confirm that fbcon actually WILL let you set a
1920x1200 resolution outside of SDL? It’s either an fbcon bug or an
off-by-one error in SDL that drops the highest resolution.
radeonfb: detected LVDS panel size from BIOS: 1920x1200
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 240x75
radeonfb (0000:01:00.0): ATI Radeon NP
How should I fix the problem?
Is there some way to confirm that fbcon actually WILL let you set a
1920x1200 resolution outside of SDL? It’s either an fbcon bug or an
off-by-one error in SDL that drops the highest resolution.
Well, xorg can set that resolution. I do not know what other
confirmation you want. Please tell me how I should investigate this!
radeonfb: detected LVDS panel size from BIOS: 1920x1200
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 240x75
radeonfb (0000:01:00.0): ATI Radeon NP
How should I fix the problem?
Is there some way to confirm that fbcon actually WILL let you set a
1920x1200 resolution outside of SDL? It’s either an fbcon bug or an
off-by-one error in SDL that drops the highest resolution.
Well, xorg can set that resolution. I do not know what other
confirmation you want. Please tell me how I should investigate this!
Well, xorg can set that resolution. I do not know what other
confirmation you want. Please tell me how I should investigate this!
You can try to set 1920x1200 with fbset.
To be clear, I’m not suggesting that the hardware is incapable of
setting that resolution, just that fbcon might not be able to (or
perhaps can’t when the X server is hold some resource on another virtual
terminal). Please let us know what happens with fbset.
radeonfb: detected LVDS panel size from BIOS: 1920x1200
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 240x75
radeonfb (0000:01:00.0): ATI Radeon NP
How should I fix the problem?
Is there some way to confirm that fbcon actually WILL let you set a
1920x1200 resolution outside of SDL? It’s either an fbcon bug or an
off-by-one error in SDL that drops the highest resolution.
Well, xorg can set that resolution. I do not know what other
confirmation you want. Please tell me how I should investigate this!
Well, xorg can set that resolution. I do not know what other
confirmation you want. Please tell me how I should investigate this!
You can try to set 1920x1200 with fbset.
To be clear, I’m not suggesting that the hardware is incapable of
setting that resolution, just that fbcon might not be able to (or
perhaps can’t when the X server is hold some resource on another virtual
terminal). Please let us know what happens with fbset.
I tried “fbset -xres 1920 -yres 1200”. As expected it does nothing
(because the virtual terminal is already at that resolution). If I do
“fbset -xres 1408 -yres 1056”, I get that resolution. “fbset -xres 1920
-yres 1200” gives back the normal resolution. Works regardless of X on
another virtual terminal. So there seems to be no problem with fbset or
X holding a resource. What else can I test?
I tried “fbset -xres 1920 -yres 1200”. As expected it does nothing
(because the virtual terminal is already at that resolution). If I do
“fbset -xres 1408 -yres 1056”, I get that resolution. “fbset -xres 1920
-yres 1200” gives back the normal resolution. Works regardless of X on
another virtual terminal. So there seems to be no problem with fbset or
X holding a resource. What else can I test?
It’s likely an SDL bug; let me take a look at what we’re doing.
So I am the first to try SDL on 1920x1200 with this over 1 year old
computer…
Nope, I’ve hit this too. I just never got the time to look into why.
Thanks for pointing this out, and, Ryan, thanks for looking into this.
I assume a patch is upcoming?On Thu, Dec 22, 2005 at 09:17:41PM +0100, Erik wrote:
So I am the first to try SDL on 1920x1200 with this over 1 year old
computer…
Almost certainly with fbcon. Most people use the X11 driver (which can
do 1920x1200).
Adds what? Will there be a patch?
Beats me, I’m not sure what the numbers that need to be filled in mean.
I’ll add it to the TODO list if no one else wants to look at this.
Remind me, I’ve got a Radeon 9200, and I can see if I can set that video
mode. I’ve not tried setting up the framebuffer driver on this system yet.
(I don’t know if my monitor can support that res though…)
-Sam Lantinga, Senior Software Engineer, Blizzard Entertainment
I have a small test program using SDL. It works in X11 on Linux. I run
xorg in 1920x1200, which is the resolution of my display. I can run the
test program in a window or fullscreen at 1920x1200. When I switch to a
virtual terminal (Ctrl+Alt+F3) and try to run my test program I get this
error:
Couldn’t set 1920x1200x32 video mode: No video mode large enough for
1920x1200
By the way, if you want to just get it working without waiting for the
next SDL library release, you can set the SDL_FB_BROKEN_MODES environment
variable to 1, and it’ll pretend that the current framebuffer console mode
is the only one available.
-Sam Lantinga, Senior Software Engineer, Blizzard Entertainment
