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Old 10-10-2011, 06:12 PM   #1
cairo
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Exclamation MacBookAir i7 OSX Lion Performance Woes

Hi, I've tried the latest beta drive 4, but my MacBook Air i7 still suffers a considerable slowdown even when the 2nd monitor is disconnected.

The only solution being is to uninstall the driver.

Is it possible to have the installation/uninstallation process not require a system reboot.

Or at least deactivate the driver to avoid slowdowns when the 2nd monitor isn't plugged in?

Please?

Thanks,
Ash
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Old 10-11-2011, 05:09 PM   #2
EddieMa
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I'm considering getting a MBA + two USB screens -- could I ask for more details from you?

-- Did you resolve this issue already?
-- Can you list all of the displays that you have connected and when the slowdown occurs?

e.g. It sounds like:

(1) MBA Attached Display
(2) Display connected via thunderbolt/VGA
(3) Display connected via USB <-- Slowdowns happen at this step

-- or was it:

(1) MBA Attached Display
(2) Display connected via USB
(3) Display connected via USB <-- Slowdowns happen at this step

-- Eddie
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Old 10-11-2011, 05:50 PM   #3
cairo
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Hey Eddie, It's a pure install driver issue.

If I have no external monitors attached, it runs slow.
As soon as I uninstall the driver, my MacBook Air runs fine.
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Old 10-12-2011, 01:55 PM   #4
cshbell
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Unhappy Confirmed

Quote:
Originally Posted by cairo View Post
Hi, I've tried the latest beta drive 4, but my MacBook Air i7 still suffers a considerable slowdown even when the 2nd monitor is disconnected.
Just got my MacBook Air Core i7 yesterday, and I can confirm cairo’s report: Sluggish display on both the primary DisplayPort monitor as well as the DisplayLink monitor on 10.7.1.

Update: But! Just installed 10.7.2 and it seems significantly faster. I’d call it near-native speed on my primary monitor, and not too much worse on my DisplayLink screen.

Things are looking up.

Last edited by cshbell; 10-12-2011 at 07:43 PM. Reason: Updated info.
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Old 10-13-2011, 02:11 AM   #5
Twist
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Quote:
Originally Posted by EddieMa View Post
I'm considering getting a MBA + two USB screens -- could I ask for more details from you?
There's some further detail about the Lion vs DisplayLink performance problems here: http://www.displaylink.org/forum/showthread.php?t=1031

Like several others, I've been forced to uninstall the DisplayLink driver entirely to regain reasonable graphics performance. Once the iOS 5 update rush abates and I'm able to install the 10.7.2 update, I'll give the driver another try and report back.
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Old 10-13-2011, 09:43 PM   #6
Twist
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10.7.2 seems to have resolved the issue. Obviously we're never going to see performance comparable to a hardware GPU with a simple USB adapter and software display driver, but I'm back to using dual 22" displays with my new MBA, and the performance is quite acceptable.
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Old 10-14-2011, 07:17 AM   #7
Twist
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Okay, 10.7.2 isn't a complete fix. I've provided more detail in the other thread linked in the post above.
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Old 10-27-2011, 11:45 PM   #8
jaddison
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Quote:
Originally Posted by Twist View Post
Okay, 10.7.2 isn't a complete fix. I've provided more detail in the other thread linked in the post above.
I agree with this - 10.7.2 is NOT a complete fix. It appears to work better, but in reality, the problem returns - just in a less consistent fashion.
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Old 11-28-2011, 08:13 AM   #9
cairo
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Just tried the new Beta 5 drivers and my MacBook Air runs a lot faster compared to the Beta 4 driver.

Thanks for the improvement.
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Old 12-02-2011, 09:55 AM   #10
MisterSpock
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Default MB Air does not work

With the new beta 5 the second display on my MB Air does not work any longer. It just stays black. Attached is one Apple cinema by the display adapter and another over USB. With the beta 4 it works, but slow.

I already tried to uninstall and re-install the drivers but without any effect. only re-installing Beta 4 brings up the screen again.
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