On Fri, 2005-04-15 at 23:32 +0100, Roger Leigh wrote:
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> Hash: SHA1
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> Hi folks,
>
> Today I received an Apple 20" Cinema Display to use with my Mac Mini.
> It works great in OS X, and on the framebuffer (booting with
> "video=ofonly"), but not with X. I'd like to get both the framebuffer
> and X set up correctly.
>
> For the framebuffer, if I boot with
>
> "video=radeonfb:[EMAIL PROTECTED]"
>
> all I get is a blank screen (powersave mode?). AFAICT all the details
> are correct, but something is wrong.
This is fixed in 2.6.12-rc, and by the 2 patches below.
Index: linux-work/drivers/video/aty/radeon_base.c
===================================================================
--- linux-work.orig/drivers/video/aty/radeon_base.c 2005-03-13
18:23:14.000000000 +1100
+++ linux-work/drivers/video/aty/radeon_base.c 2005-03-13 18:43:58.000000000
+1100
@@ -1743,8 +1743,7 @@
} else {
/* DFP */
newmode->fp_gen_cntl |= (FP_FPON | FP_TMDS_EN);
- newmode->tmds_transmitter_cntl = (TMDS_RAN_PAT_RST |
TMDS_ICHCSEL) &
- ~(TMDS_PLLRST);
+ newmode->tmds_transmitter_cntl &= ~(TMDS_PLLRST);
/* TMDS_PLL_EN bit is reversed on RV (and mobility)
chips */
if (IS_R300_VARIANT(rinfo) ||
(rinfo->family == CHIP_FAMILY_R200) ||
!rinfo->has_CRTC2)
Index: linux-work/drivers/video/aty/radeon_i2c.c
===================================================================
--- linux-work.orig/drivers/video/aty/radeon_i2c.c 2005-03-11
15:37:08.000000000 +1100
+++ linux-work/drivers/video/aty/radeon_i2c.c 2005-03-11 16:44:03.000000000
+1100
@@ -236,6 +236,12 @@
if (edid)
break;
}
+ /* Release the DDC lines when done or the Apple Cinema HD display
+ * will switch off
+ */
+ OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN | VGA_DDC_DATA_OUT_EN));
+ (void)INREG(reg);
+
if (out_edid)
*out_edid = edid;
if (!edid) {
> For X, I have a similar problem. X starts without errors (in the
> logs), but the screen turns off and I have to power cycle the system
> to use it again. Has anyone got an example XF86Config-4 I could use?
> Currently, I'm using this:
X need a similar patch to the second one, though it _might_ work on the
mini as I think X doesn't even try to DDC on that one. Just use
"UseFBDev" and eventually give X a modeline obtained from fbset.
> Section "Device"
> Identifier "Radeon 5962"
> Driver "ati"
> BusID "PCI:0:16:0"
> Option "UseFBDev" "false"
> Option "ConnectedMonitor" "DFP"
> EndSection
>
> Section "Monitor"
> Identifier "Apple Cinema Display"
> VendorName "Apple Inc."
> ModelName "Apple Cinema Display 20"
> HorizSync 28-90
> VertRefresh 43-72
> #Option "DPMS"
> EndSection
>
> Section "Screen"
> Identifier "Default Screen"
> Device "Radeon 5962"
> Monitor "Apple Cinema Display"
> DefaultDepth 24
> SubSection "Display"
> Depth 24
> Modes "1680x1050"
> EndSubSection
> EndSection
>
> Section "ServerLayout"
> Identifier "Default Layout"
> Screen "Default Screen"
> InputDevice "Generic Keyboard"
> InputDevice "Configured Mouse"
> EndSection
>
> Section "DRI"
> Mode 0666
> EndSection
>
>
> Many thanks,
> Roger
>
> - --
> Roger Leigh
> Printing on GNU/Linux? http://gimp-print.sourceforge.net/
> Debian GNU/Linux http://www.debian.org/
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--
Benjamin Herrenschmidt <[EMAIL PROTECTED]>
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