Re: radeon framebuffer problem

[James Mayer <james@cobaltmountain.com>]

Hi,

> Jun  2 19:55:35 hannonb kernel: radeonfb: cannot map FB
> 
> My card is a Radeon Mobility M6 LY.
> All kernels are with radeon framebuffer compiled in as the only
> framebuffer.

You might want to try this, I have an M6 LY with what I suspect is the
same problem.

Good luck!

--- radeonfb.c.orig	Thu May  9 16:51:26 2002
+++ radeonfb.c	Thu May  9 16:48:46 2002
@@ -877,6 +877,14 @@
 	/* mem size is bits [28:0], mask off the rest */
 	rinfo->video_ram = tmp & CONFIG_MEMSIZE_MASK;
 
+	/* According to XFree86 4.2.0, some production M6's return 0
+	   for 8MB. */
+	if (rinfo->video_ram == 0 && 
+	    (pdev->device == PCI_DEVICE_ID_RADEON_LY || 
+	     pdev->device == PCI_DEVICE_ID_RADEON_LZ)) {
+	    rinfo->video_ram = 8192 * 1024;
+	  }
+
 	/* ram type */
 	tmp = INREG(MEM_SDRAM_MODE_REG);
 	switch ((MEM_CFG_TYPE & tmp) >> 30) {