Date: Fri, 12 Dec 2014 11:44:01 -0500 From: "Mikhail T." <mi+thun@aldan.algebra.com> To: x11@FreeBSD.org Subject: "SOLVED": Painfully slow X11 after upgrade Message-ID: <548B1B51.8040705@aldan.algebra.com> In-Reply-To: <20141120072234.6de67301@X220.alogt.com> References: <546CBE3A.20502@aldan.algebra.com> <20141120072234.6de67301@X220.alogt.com>
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This is, what I ended up doing:
1. Switch from xf86-video-ati to xf86-video-ati-ums
2. The xf86-video-ati-ums didn't look quite right, so I added the below
patches to:
1. (optionally) disable attempts by the driver to limit video-modes
based "bandwidth" considerations -- I was now able to get the
1600x1200 screen, which is the native mode of my LCD monitor --
glxgears (default size) ran at about 100 frames per second
(compared with 50 fps of unmodified KMS);
2. disable attempts by the driver to disable DRI based on card's
memory considerations -- the current formula it uses made no
sense to me so I changed the code to issue a warning, but
proceed with DRI anyway -- I now get DRI and the same glxgears
manages 250 fps.
3. Patch our xf86-video-ati-ums/Makefile to take advantage of the
option 2.a. above.
My card is not capable of (hardware) OpenGL -- but it can do direct
rendering...
Maybe, something similar can be done with the KMS radeon driver?
-mi
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name="patch-src__radeon_driver.c"
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filename="patch-src__radeon_driver.c"
--- src/radeon_driver.c 2012-06-25 04:19:41.000000000 -0400
+++ src/radeon_driver.c 2014-12-12 10:30:55.000000000 -0500
@@ -3665,14 +3665,15 @@
if (maxy <= pScrn->virtualY * 3) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
- "Static buffer allocation failed. Disabling DRI.\n");
- xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
"At least %d kB of video memory needed at this "
- "resolution and depth.\n",
+ "resolution (%dx%d) and depth (%d*3). We only have "
+ "%d/%d (%d)? Will try anyway, disable DRI by hand if "
+ "you'd rather we didn't\n",
(pScrn->displayWidth * pScrn->virtualY *
- info->CurrentLayout.pixel_bytes * 3 + 1023) / 1024);
- info->directRenderingEnabled = FALSE;
- } else {
- info->directRenderingEnabled = RADEONDRIScreenInit(pScreen);
+ info->CurrentLayout.pixel_bytes * 3 + 1023) / 1024,
+ pScrn->displayWidth, pScrn->virtualY,
+ info->CurrentLayout.pixel_bytes, info->FbMapSize/1024,
+ width_bytes, maxy/1024);
}
+ info->directRenderingEnabled = RADEONDRIScreenInit(pScreen);
}
@@ -6056,4 +6057,5 @@
RADEONEntPtr pRADEONEnt = RADEONEntPriv(pScrn);
+#ifndef DISABLE_MODE_BANDWIDTH
/*
* RN50 has effective maximum mode bandwidth of about 300MiB/s.
@@ -6065,4 +6067,5 @@
return MODE_BANDWIDTH;
}
+#endif
/* There are problems with double scan mode at high clocks
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name="patch-src__radeon_output.c"
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filename="patch-src__radeon_output.c"
--- src/radeon_output.c 2012-06-25 04:19:41.000000000 -0400
+++ src/radeon_output.c 2014-12-12 10:18:36.000000000 -0500
@@ -534,4 +534,5 @@
RADEONEntPtr pRADEONEnt = RADEONEntPriv(pScrn);
+#ifndef DISABLE_MODE_BANDWIDTH
/*
* RN50 has effective maximum mode bandwidth of about 300MiB/s.
@@ -543,4 +544,5 @@
return MODE_BANDWIDTH;
}
+#endif
if (radeon_output->active_device & (ATOM_DEVICE_TV_SUPPORT)) {
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Index: Makefile
===================================================================
--- Makefile (revision 374568)
+++ Makefile (working copy)
@@ -13,6 +13,10 @@
XORG_CAT= driver
USE_XORG= xf86driproto xineramaproto xf86miscproto glproto
+OPTIONS_DEFINE= BANDWIDTH
+BANDWIDTH_DESC= Ignore card's presumed bandwidth, when selecting video mode
+BANDWIDTH_CFLAGS=-DDISABLE_MODE_BANDWIDTH
+
CONFIGURE_ARGS+=--disable-kms
INSTALL_TARGET= install-strip
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