On Friday 25 September 2009 02:37:31 pm Ian Porter wrote: > I have a acer aspire 9815 with from what I have read a 32bit > Northbridge and when you add 4GB of RAM with a nVidia 256 of "virtual > ram" causes a base address registers (BAR1), but works fine with 2GB > because there is a problem with the way that Linux kernel is > allocating the memory associated with the devices and places then out > of range. Could you please open a bugzilla here: http://bugzilla.kernel.org/enter_bug.cgi?component=PCI&product=Drivers with a description of exactly what is broken? Please attach: - dmesg and /proc/iomem with 2GB - dmesg and /proc/iomem with 4GB - dmesg and /proc/iomem with 4GB, booting with "pci=use_crs" - lspci -vv Thanks, Bjorn > Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and > 945GT Express Memory Controller Hub (rev 03) > PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and > 945GT Express PCI Express Root Port (rev 03) > > From this website it appears that some one was trying to update the > PCI IOMEM part of the kernl > > http://tjworld.net/wiki/Linux/PCIDynamicResourceAllocationManagement > > but says that it will be in the .30 / .31 kernel but I am not able to > still use the 4GB of ram and I am using the 2.6.31-10-generic > #35-Ubuntu SMP Tue Sep 22 17:33:42 UTC 2009 i686 GNU/Linux from a > kubuntu 9.10 setup and was hoping to have the fix already applied. > > Was wondering since I am using the k/ubuntu kernel does the "real" > kernel have the PCI IOMEM Upgrade ? or do I have pass some kernel > parameters on grub to allow for this to work correctly ? or has there > been another upgrade to the PCI structure that will come in a later > release ? > > Also there was some advice to update the BIOS for some laptops and set > the upper memory limit, does this make the PC memory have a virtual > head to it and thus the OS will not see the rest of RAM ? or is it > just for the PCI setup aspects that look at the upper memory limit and > the rest of the OS can see the and use the rest of the RAM ? > > Any advice would be great. > > Regards > Ian > > w: www.codingfriends.com > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
