SMI LynxEM

SMI LynxEM+ This is a Silicon Motion video adapter Note: 4MB memory versions are called LynxEM4+ in IBM documentation Features Chipset: SM712G PCI ID: 126f:0712 2 or 4MB SGRAM Interface: PCI 2.1

Linux X.Org driver

This chip is supported by the 'siliconmotion' driver as part of the X.Org distribution

ThinkPad LCD

Display on the internal LCD works as long as you set the monitor settings correct.

External VGA port

??

Linux kernel Framebuffer driver

There are two framebuffer drivers. One is sm712.c. The other is lynxfb.c. The sm712.c driver comes with the Embedded Linux Development Kit (eldk) as part of the stock Linux kernel and seems to work well (but possibly needs hardware-dependant tweaks in some embedded environments.) The second one, lynxfb.c was obtained directly from Silicon Motion and won't work without tweaks in some environments.

There is also limited framebuffer support for this chip in embedded devices as part of the "U-Boot" boot loader. This works well and is based on the second (lynxfb) driver.

ThinkPad's this chip may be found in

• 240X
• i Series 1200, i Series 1210, i Series 1230, i Series 1250, i Series 1260
• i Series 1300, i Series 1330, i Series 1370