Date: Fri, 17 Dec 2010 16:39:41 +0100 From: Gary Jennejohn <gljennjohn@googlemail.com> To: N V <VaNs9@yandex.ru> Cc: x11@freebsd.org Subject: Re: Intel G41 graphics are slow while memory runs in dual channel mode. Message-ID: <20101217163941.19b6b5e6@ernst.jennejohn.org> In-Reply-To: <501101292595334@web65.yandex.ru> References: <501101292595334@web65.yandex.ru>
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On Fri, 17 Dec 2010 17:15:34 +0300 N V <VaNs9@yandex.ru> wrote: > Hello. > > I have Compaq 500B with "Pentium(R) Dual-Core CPU E5300 @ 2.60GHz (2600.02-MHz 686-class CPU)." > Video card is: > %pciconf -lv | grep -i g41 > device = 'Intel G41 express graphics (PCIVEN_8086&DEV_2E32&SUBSYS_31031565&REV_033&115)' > %grep -i intel /var/log/Xorg.0.log | head > (--) PCI:*(0:0:2:0) 8086:2e32:103c:2a8c Intel Corporation 4 Series Chipset Integrated Graphics Controller rev 3, Mem @ 0xfe400000/4194304, 0xd0000000/268435456, I/O @ 0x0000dc00/8, BIOS @ 0x????????/65536 > (II) LoadModule: "intel" > (II) Loading /usr/local/lib/xorg/modules/drivers/intel_drv.so > (II) Module intel: vendor="X.Org Foundation" > (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, > Mobile IntelŽ GM45 Express Chipset, > Intel Integrated Graphics Device, G45/G43, Q45/Q43, G41 > (==) intel(0): Depth 24, (--) framebuffer bpp 32 > (==) intel(0): RGB weight 888 > > The system is: > %uname -mor > FreeBSD 8.2-PRERELEASE i386 > > There were 2GBs of memory running in single channel (one slot occupied). Everything was ok. > I've added 2 more GBs (occuping the second slot). Now memory runs in dual channel. I have 4GBs. The system is i386, non-PAE, so ~3GBs are visible. > I have latest KDE that is built from ports. > And the problem: after adding memory, graphics (compositing, I think) became so slow rendering the effects, that after a second or less of some "desktop effect" KDE turns off desktop effects. XvMC is enabled in xorg.conf, if it matters. > I doubt this has anything to do with dual-channel memory. More likely is that you're trying to use 4GiB with i386, which can cause all kinds of problems. You have two options, as fas as I can tell 1) run amd64, which can use the full 4GiB of memory 2) set hm.physmem to 3G (or maybe a little more) in /boot/loader.conf -- Gary Jennejohn
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