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powerbook 12" and mirroring displays
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Mac Elite
Join Date: Jun 2003
Location: Alabama
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hey,
i have a 19" flat screen crt that runs up to 1600x1200, so it looks pretty bad mirroring my 12" 1024x768 on to it, but when i don't mirror and use the 1600 resolution i see significant slow downs (graphically) i assume becuz the video card is having to refresh the bigger resolution that it isn't used too, or designed to do. is this pretty much something i'm going to have to deal with? or is there any third party hardware or software that i can use to help it out.
fyi i bought the pbook for portability and i will be purchasing a powermac next february but for now i am doing power using and the extra real estate helps. ty for future suggestions and comments.
mafia
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Moderator  Join Date: Oct 2001
Location: San Jose, CA
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Define "slows down graphically." What are you doing that seems to be slowing things down? You've only got 32 MB of VRAM there and if you are trying to do something like play a game at that high a resolution with the internal display still on, certainly you're not going to get the performance you expect. Please let us know what you are trying to do.
Steve
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Mac Elite
Join Date: Jun 2003
Location: Alabama
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i don't really know except like when i'm working in photoshop or flash or even safari some times it has bad delays and i don't experience these delays when i'm just on the 12" screen.
mafia
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Forum Regular
Join Date: Dec 2003
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1. Are you running Panther with all of the latest software updates? The graphics driver updates from ATI and nVidia are included automatically by Apple in these updates.
2. Do you have access (friend?) to an LCD monitor? It sounds like you're using the VGA adapter to connect to a CRT and I'd be curious to know if you get the same results connecting to an LCD via the mini-DVI port.
3. Do these slowdowns happen when you mirror at 1024x768? (despite you not wanting to do so - I'm curious if it is the fact that you're using an external monitor or the fact that the resolution is set at 1600x1200)
Apart from that you should be completely fine doing the type of 2D work that you're talking about at that resolution. I could see it if you were playing a game like ibook_steve mentioned or if you were running something higher like 2048, but your scenario should be fine.
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There's a splinter in your eye and it reads "react".
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Mac Elite
Join Date: Jun 2003
Location: Alabama
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ya, when i mirror i don't get the same problem, i am used to a lot of real estate on my old windows machine i ran 2 monitors at 1600x1200 so its just a preference / i'm used to it. my pb doesn't have a minidvi hookup, just the wierd monitor thing that came w/ my pb
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Grizzled Veteran
Join Date: Oct 2003
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I run a 12" revB model on a 17" LCD (mini-DVI to VGA adapter) and haven't seen this when running dual display mode.
I run the 17" LCD in 1280x1024 and there is no lag or slowness. It does not go up to 1600x1200 (only 1600x1024), so I could not test the higher res, but have you tried a little lower res like 1280x1024 to see if the response was any better?
PS. that "wierd monitor thing" is a mini-VGA to VGA adapter. The revA 12" have mini-VGA out. The revB have mini-DVI out.
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Forum Regular
Join Date: Dec 2003
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Try madmacgames' suggestion of 1280x1024 and let us know how that goes. Do you have a RevA or RevB 12"? The graphics chipset was significantly improved in the RevB models (RevA: GeForce4 Go 420, RevB: GeForceFX Go 5200). If you've got an A then it might be a limitation of the chipset, but that still seems weird when all you're doing is 2D rendering. Also - what is the actual resolution of the images themselves that you are trying to render? If you can reliability reproduce the problem when doing something like applying a plugin effect, try running the same plugin with a smaller image to see if that changes anything.
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There's a splinter in your eye and it reads "react".
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Mac Elite
Join Date: Jun 2003
Location: Alabama
Status:
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i'm pretty sure there is no solution to my prob, ii think the problem is one the rev a graphics chipset, and 2) the vga, if i had minidvi and could turn off the laptop screen by closing it then i don't think it would have as much trouble but the fact that both screens are active. thx for all the suggestions i'll just use the 12 inch screen till i get my g5 in october. thx
mafia
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Grizzled Veteran
Join Date: Oct 2003
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Originally posted by Mafia:
if i had minidvi and could turn off the laptop screen by closing it then i don't think it would have as much trouble but the fact that both screens are active.
do you have an external keyboard or mouse? I think you can put the powerbook to sleep and wake it up with an external keyboard or mouse. This will make the external display the primary display and the powerbook screen will stay off. I do this with mine. I do not have an external keyboard but do have a mouse. I wake it up with the mouse and then open the lid to use the powerbook's keyboard (powerbook screen stays off).
Also, If you do not have an external mouse or keyboard, plugging or unplugging a USB device will cause the powerbook to wakeup (and with the lid down, the screen should stay off .. ie it will go into clamshell mode).
Though I do have a revB, I believe the revA's can run in clamshell mode as well. You just need someway to wake it up with the lid closed (external mouse, keyboard, or unplug/plug USB cable).
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