Author: branden
Date: 2005-01-10 14:32:04 -0500 (Mon, 10 Jan 2005)
New Revision: 2124
Modified:
trunk/debian/CHANGESETS
trunk/debian/changelog
trunk/debian/patches/099m_mga_increase_minimum_pixel_clock.diff
Log:
Permit lower pixel clocks (less than 17.75 MHz, but greater than 12 MHz)
on older (Millenium, Mystique) Matrox cards. Thanks to Jan Gorski for
supplying information (updates fix for #261993).
Modified: trunk/debian/CHANGESETS
===================================================================
--- trunk/debian/CHANGESETS 2005-01-10 18:17:24 UTC (rev 2123)
+++ trunk/debian/CHANGESETS 2005-01-10 19:32:04 UTC (rev 2124)
@@ -114,4 +114,9 @@
(Closes: #289508)
2123
+Permit lower pixel clocks (less than 17.75 MHz, but greater than 12 MHz)
+on older (Millenium, Mystique) Matrox cards. Thanks to Jan Gorski for
+supplying information (updates fix for #261993).
+ 2124
+
vim:set ai et sts=4 sw=4 tw=80:
Modified: trunk/debian/changelog
===================================================================
--- trunk/debian/changelog 2005-01-10 18:17:24 UTC (rev 2123)
+++ trunk/debian/changelog 2005-01-10 19:32:04 UTC (rev 2124)
@@ -93,8 +93,12 @@
* Fix typo in German debconf template translations. Thanks, Georg Neis!
(Closes: #289508)
- -- Branden Robinson <[EMAIL PROTECTED]> Mon, 10 Jan 2005 13:16:05 -0500
+ * Permit lower pixel clocks (less than 17.75 MHz, but greater than 12 MHz)
+ on older (Millenium, Mystique) Matrox cards. Thanks to Jan Gorski for
+ supplying information (updates fix for #261993).
+ -- Branden Robinson <[EMAIL PROTECTED]> Mon, 10 Jan 2005 14:29:58 -0500
+
xfree86 (4.3.0.dfsg.1-10) unstable; urgency=medium
* Upload urgency set to medium due to fix for stable-release-critical bugs
Modified: trunk/debian/patches/099m_mga_increase_minimum_pixel_clock.diff
===================================================================
--- trunk/debian/patches/099m_mga_increase_minimum_pixel_clock.diff
2005-01-10 18:17:24 UTC (rev 2123)
+++ trunk/debian/patches/099m_mga_increase_minimum_pixel_clock.diff
2005-01-10 19:32:04 UTC (rev 2124)
@@ -1,28 +1,59 @@
$Id$
-Increase the minimum pixel clock for Matrox cards based on feedback from
-Teemu Ikonen. See <URL:
-http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=261993 >.
+Set the minimum pixel clock for Matrox cards based on the chipset.
+Thanks to Teemu Ikonen for G550 information, Jeff King for G400
+information, and Jan Gorski for Mystique information.
+
+See <URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=261993 >.
+
This patch by Branden Robinson.
-Not submitted upstream to XFree86.
+Not submitted upstream to XFree86 or X.Org.
---- xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c~ 2004-12-09
13:01:06.000000000 -0500
-+++ xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c 2004-12-09
13:03:50.000000000 -0500
-@@ -1987,8 +1987,13 @@
+--- xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c~ 2005-01-10
13:49:11.000000000 -0500
++++ xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c 2005-01-10
14:07:51.000000000 -0500
+@@ -1987,10 +1987,39 @@
/* XXX Set HW cursor use */
- /* Set the min pixel clock */
- pMga->MinClock = 12000; /* XXX Guess, need to check this */
+- xf86DrvMsg(pScrn->scrnIndex, X_DEFAULT, "Min pixel clock is %d MHz\n",
+- pMga->MinClock / 1000);
+ /*
-+ * Set the min pixel clock; this was originally guessed to be 12000,
-+ * but an MGA G550 user reports that modes with clocks less than 17750
-+ * lock up the card. See
++ * Set the minimum pixel clock; this was originally guessed to be 12000
++ * (kHz). MGA G550 and G400 users report that modes with clocks less
++ * than 17750 lock up the card. A Mystique user reports that a 12.6
++ * MHz pixel clock works fine. See
+ * <URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=261993 >
++ * for details.
++ *
++ * Based on the above, I am assuming that Millenium- and Mystique-era
++ * cards can handle the lower clocks, and the G-series cards cannot.
++ * Unrecognized chips are presumed below to be of the newer variety,
++ * which don't support the low pixel clocks.
++ * -- Branden Robinson
+ */
-+ pMga->MinClock = 17750;
- xf86DrvMsg(pScrn->scrnIndex, X_DEFAULT, "Min pixel clock is %d MHz\n",
- pMga->MinClock / 1000);
++ switch(pMga->Chipset) {
++ case PCI_CHIP_MGA2064:
++ case PCI_CHIP_MGA1064:
++ case PCI_CHIP_MGA2164:
++ case PCI_CHIP_MGA2164_AGP:
++ pMga->MinClock = 12000;
++ break;
++ case PCI_CHIP_MGAG100:
++ case PCI_CHIP_MGAG100_PCI:
++ case PCI_CHIP_MGAG200:
++ case PCI_CHIP_MGAG200_PCI:
++ case PCI_CHIP_MGAG400:
++ case PCI_CHIP_MGAG550:
++ default:
++ pMga->MinClock = 17750;
++ break;
++ }
++ xf86DrvMsg(pScrn->scrnIndex, X_DEFAULT, "Minimum permitted pixel clock is
"
++ " %d MHz\n", pMga->MinClock / 1000);
/*
+ * If the user has specified ramdac speed in the XF86Config
+ * file, we respect that setting.
--
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