When will we get Sandy Bridge support?

Solution 1:

This is Michael Larabel of Phoronix. Sandy Bridge CPU and Cougar Point chipset support under Linux is quite good, sans the graphics bugs and small other hiccups (as pointed out in my articles and already in this thread, don't expect your motherboard to necessarily have LM_Sensors support, there may be some SnR problems, USB3 is generally fine but under some scenarios can be iffy, etc).

In terms of the graphics problems I have noted that some people say is due to a system mis-configuration on my part, that is not the case. Intel's Jesse Barnes is able to reproduce the most severe issue I reported of stability problems / tiling corruption when the system endures enough load. This doesn't seem to happen to everyone or they don't realize it as the system must be under lots of load, but it's happening with at least select ASUS motherboards. I'm waiting on a new board from Intel to see how that goes and how the Linux graphics performance is once everything is working.

Solution 2:

I got the Asus P8P67 Pro and core i5 2500K. I plugged in my old hard drives and it booted right up. The only problems I have found so far are:

1. Can't suspend with the USB 3 enabled. Unloading the xhci_hcd module resolves that.
2. No ACPI temperature monitoring, so I had to load the pkgtemp module. Contacted ASUS about fixing this in future bios rev.
3. No fan control. Contacted ASUS, hopefully they will tell me what chip drives the fan and I can patch lm-sensors to interface with it, or they will add proper ACPI FAN support in the next rev of the bios.
4. After overclocking, the bios supplied cpu frequency table is wrong. The auto oc option set the base clock to 3.4 GHz with 4.3 GHz on turbo boost, but the ACPI P-state table claims it runs at 5.8 GHz. Contacted ASUS and awaiting bios update.

This is all with Maverick. I will do some more testing with Natty. The one time I did, suspend seemed to work fine without having to unload the USB 3 driver.

FYI, I had an Athlon 64 5000+ Black Edition with dual cores before. That took 22 seconds to build e2fsprogs. New setup takes under 6. I am also using my existing Radeon HD card.

Solution 3:

It is still very bad. ATI catalyst does not work. Even the newest downloaded version. Kernel 3.0-rc5 still did not help. There was a package called acpi_call, that did not work either. After setting "acpi_osi=linux pci=noacpi", it booted normally. I don't know if the fancontrol I installed as service, is working or not, but it runs much cooler than its default setting. However windows 7 is much more cooler than this.

$ lspci | grep VGA

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

01:00.0 VGA compatible controller: ATI Technologies Inc NI Seymour [AMD Radeon HD 6470M]

$ lspci -v -s 00:02.0; lspci -v -s 01:00.0

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Dell Device 04c1
    Flags: bus master, fast devsel, latency 0, IRQ 25
    Memory at e0000000 (64-bit, non-prefetchable) [size=4M]
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 5000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

01:00.0 VGA compatible controller: ATI Technologies Inc NI Seymour [AMD Radeon HD 6470M] (prog-if 00 [VGA controller])
    Subsystem: Dell Device 04c1
    Flags: fast devsel, IRQ 11
    Memory at c0000000 (64-bit, prefetchable) [disabled] [size=256M]
    Memory at e1700000 (64-bit, non-prefetchable) [disabled] [size=128K]
    I/O ports at 4000 [disabled] [size=256]
    Expansion ROM at e1720000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel modules: radeon

Here default intel can use only 256M max. That is why my need for speed most wanted would not run. Even the trackballs on ubuntu cannot run. I even tried to install xserver* from edgers ppa, but it did not work. Mine is Dell n4110 sandy bridge. Now I have a very unique problem.

$ glxgears 

Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.

300 frames in 5.0 seconds = 59.821 FPS

XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
  after 1188 requests (1188 known processed) with 0 events remaining.