I tried XFree86 4.2.99.2 with RADEON_VE and a dvi flat panel.
When I typed "xset dpms force off", the screen became black
but the flat panel didn't go to power-save mode.
With the following patch for
xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c ,
my flat panel(DisplayType is MT_DFP) goes to power-save mode and
back-light seems to turn off.
I'm not sure this patch is correct. And it doesn't work when
DisplayType is MT_LCD (laptop?). So I would like developers to check
my patch and update codes in CVS repository for both LCD and DFP.
---
NABEYA Kenichi
*** radeon_driver.c Wed Oct 16 13:53:15 2002
--- radeon_driver.c.new Sun Oct 27 01:01:29 2002
***************
*** 5493,5496 ****
--- 5493,5508 ----
}
break;
}
+ if (info->DisplayType == MT_DFP) {
+ switch (PowerManagementMode) {
+ case DPMSModeOn:
+ OUTREG(RADEON_FP_GEN_CNTL, INREG(RADEON_FP_GEN_CNTL) | (RADEON_FP_FPON |
+RADEON_FP_TMDS_EN));
+ break;
+ case DPMSModeStandby:
+ case DPMSModeSuspend:
+ case DPMSModeOff:
+ OUTREG(RADEON_FP_GEN_CNTL, INREG(RADEON_FP_GEN_CNTL) & ~(RADEON_FP_FPON |
+RADEON_FP_TMDS_EN));
+ break;
+ }
+ }
}
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