50Hz vs 60Hz refresh?

X60/X61 series specific matters only.
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rkuo
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Joined: Sun Jun 25, 2006 10:24 pm
Location: United States

50Hz vs 60Hz refresh?

#1 Post by rkuo » Sat Dec 30, 2006 2:50 pm

For some reason, my LCD only seems to report a 50Hz refresh. Nearly all video is oriented around a 60Hz refresh, so the end result is videos playing back look slightly jumpy on the LCD. Does anyone know how to fix this? I've read reports that there used to be a 60Hz option available, but it somehow disappeared with one of the driver updates.
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gzz
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#2 Post by gzz » Sat Dec 30, 2006 6:07 pm

My x60s also displays 50 Hz only
X60s
L2300, 3GB, 5k250, 4 cell, XP Pro SP3, USB Combo, Dell ST2310
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CHoPSTICK89
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Joined: Tue Feb 21, 2006 9:05 pm

#3 Post by CHoPSTICK89 » Sat Dec 30, 2006 9:44 pm

rollback to old intel driver
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andrzej
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Joined: Sat Dec 02, 2006 5:38 pm
Location: Poland

RE: video drv rollback

#4 Post by andrzej » Sun Dec 31, 2006 7:51 am

:D CHoPSTICK89 ...rollback to old intel driver...
I'm not shure about above advice
FYI in my case I had only 50Hz refresh - without 60Hz option
dettails below (changes are explained in bold)

before video & BIOS upd
Video Card drv ¦ *Version*6.14.10.4450, 12-14-2005
BIOS ¦ *Release Date*07/27/2006 *Version*7BET49WW (1.09 )
¦ Display
¦ ------------------------------------------------------------------------------
¦ *ThinkPad Display 1024x768**Mode*1024 x 768 (16-bit) (50 Hz)
¦ ...
¦ ------------------------------------------------------------------------------
¦ *Video Card*
¦ ------------------------------------------------------------------------------
¦ *Mobile Intel(R) 945GM Express Chipset Family**Manufacturer*Intel Corporation
¦ *Video Card Chip Type*Intel(R) Calistoga Graphics Controller
¦ *Video Card Memory*128.00 MB
¦ ...
¦ ------------------------------------------------------------------------------

after upd Video Card drv ¦ *Version*6.14.10.4693, 9-15-2006
¦ Display
¦ ------------------------------------------------------------------------------
¦ *ThinkPad Display 1024x768**Mode*1024 x 768 (32-bit) (50 Hz)
¦ ------------------------------------------------------------------------------
¦ ------------------------------------------------------------------------------
¦ ...
¦ *Video Card Chip Type*Intel(R) GMA 950
¦ ...
¦ ------------------------------------------------------------------------------

then actual
after upd BIOS ¦ Release Date 11/17/2006 BIOS Version String 7BETC4WW (2.05 )
¦ Display
¦ ------------------------------------------------------------------------------
¦ ThinkPad Display 1024x768Mode 1024 x 768 (32-bit) (50 Hz)
¦ Signal Type Digital
¦ ------------------------------------------------------------------------------
¦ Video Card
¦ ------------------------------------------------------------------------------
¦ Mobile Intel(R) 945GM Express Chipset FamilyManufacturer Intel Corporation
¦ Video Card Chip Type Intel(R) GMA 950
¦ Video Card Memory 224.00 MB
¦ Video Card BIOS Intel Video BIOS
¦ Driver c:\windows\system32\drivers\ialmnt5.sys
¦ Version 6.14.10.4693, 9-15-2006
¦ Mobile Intel(R) 945GM Express Chipset FamilyManufacturer Intel Corporation
¦ Driver c:\windows\system32\drivers\ialmnt5.sys
¦ Version 6.14.10.4693, 9-15-2006
2* Cq LTE Elite 4/75CXL (2850B); 600X (2645-4EU); 2* X31 (2672-C8G); X60s (1704-5UG); X200s (7469-W2S); X201s (5397W1D)
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GomJabbar
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#5 Post by GomJabbar » Sun Dec 31, 2006 8:26 am

According to the following thread, you have to go back a couple of video driver revisions. If you want the original video driver, the setup program should be located on your hard drive. On my T42 it is located at C:\IBMTOOLS\drivers\VIDEO. I am not sure if Lenovo still uses the same directories, but I imagine it is there somewhere. If you do decide to install the old driver, you should uninstall the current one first.

http://forum.thinkpads.com/viewtopic.php?t=34142
DKB
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CHoPSTICK89
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Posts: 65
Joined: Tue Feb 21, 2006 9:05 pm

#6 Post by CHoPSTICK89 » Sun Dec 31, 2006 1:49 pm

GomJabbar wrote:According to the following thread, you have to go back a couple of video driver revisions. If you want the original video driver, the setup program should be located on your hard drive. On my T42 it is located at C:\IBMTOOLS\drivers\VIDEO. I am not sure if Lenovo still uses the same directories, but I imagine it is there somewhere. If you do decide to install the old driver, you should uninstall the current one first.

http://forum.thinkpads.com/viewtopic.php?t=34142
Agreed, its pretty far back, maybe 3-4 drivers back
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