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>I am desperately trying to run X Windows (X Free 86) with Linux on my
>TP 360 Cs.
>This machine has a double scan screen and I think that this does not
>work with X.
This fixed the problem for me, thanks to Michael Steiner:
*** lib/Server/drivers/vga256/pvga1/driver.c Wed Jun 22 15:49:40 1994
--- lib/Server/drivers/vga256/pvga1/driver.c.orig Tue Jun 7 23:03:36
1994
***************
*** 134,142 ****
#define IS_WD90C3X(x) (((x) == WD90C30) || ((x) == WD90C31))
! /*!! commented by sti */
! /* #undef DO_WD90C20 */
! #define DO_WD90C20
static unsigned PVGA1_ExtPorts[] = { /* extra ports for WD90C31
*/
0x23C0, 0x23C1, 0x23C2, 0x23C3, 0x23C4, 0x23C5 };
--- 134,140 ----
#define IS_WD90C3X(x) (((x) == WD90C30) || ((x) == WD90C31))
! #undef DO_WD90C20
static unsigned PVGA1_ExtPorts[] = { /* extra ports for WD90C31
*/
0x23C0, 0x23C1, 0x23C2, 0x23C3, 0x23C4, 0x23C5 };
***************
*** 383,400 ****
if (!vga256InfoRec.videoRam) {
unsigned char config;
! #ifdef DUAL_SCAN
! /* check if we have a dual-scan LCD */
! outb(vgaIOBase + 4, 0x31);
! if ((inb(vgaIOBase + 5) & 0x3) == 0) {
! /* clear bit 6 to disable upper 512k The remaining 512Kbytes
! of video memory are not disabled by clearing the bit, but it
! is actually used as a shadow of first 512Kbyte */
! outb(0x3CE, 0x0B); config = inb(0x3CF);
! outb(0x3CE, 0x0B); outb(0x3CF, config & 0xAF);
! outb(0x3CE, 0x0B); config = inb(0x3CF);
! }
! #endif
switch(config & 0xC0) {
case 0x00:
case 0x40:
--- 381,388 ----
if (!vga256InfoRec.videoRam) {
unsigned char config;
! outb(0x3CE, 0x0B); config = inb(0x3CF);
!
switch(config & 0xC0) {
case 0x00:
case 0x40:
--
This and other good info is available on the Linux for Thinkpads Web page:
http://peipa.essex.ac.uk/tp-linux/tp-linux.html
-John
---
John C. Hart, Asst. Prof.
School of EECS, Wash. St. Univ.
Pullman, WA 99164-2752
(509)335-2343 fax:(509)335-3818