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Gigabyte 990FXA-UD5 Issues and workarounds.
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venquessa
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Joined: 07 Mar 2015
Posts: 17

PostPosted: Sat Mar 07, 2015 2:31 pm    Post subject: Gigabyte 990FXA-UD5 Issues and workarounds. Reply with quote

Issue No. 1 - Network card.

05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)

The 3.x kernel's default response is to load the r8169 module. This module may work for you, great, move on, or it might randomly fail after a period or time ... another behaviour reported is that it will work right up until you reboot from windows and it won't switch back on again in linux. None of these were my issue.

My symptoms w/ r8169 driver:
Network card responds, link light comes on, switch sees the nic and it's light comes on showing Gigabit-Ethernet connection. DHCP fails. Manual network config works, but no traffic from the nic.
At some random point other onboard devices start to fail, such as the USB controller dies. Accompanied symptoms here are locking up of dmesg.
The NVidia driver may IO_PAGE_FAULT when starting X.
Other subsystems may IO_PAGE_FAULT when starting X.

Eventual solution:
Install Realtek r8168 driver from: http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2
Recompile kernel to remove all Realtek network devices and modules. I left Realtek Support enabled, built-in, but unselected all realtek modules.
Reinstall Realtek r8168 driver.
Verifiy there is no r8169 driver present.
Reboot

This gets the network card working, but I still had the IO_PAGE_FAULT with the nividia drivers. There are kernel bugs related to this, none appear to have a clear solution, they just "went away". Some report the IO_PAGE_FAULT in the Nic or ATA controller when running X.
Attempted: Upgrading kernel to latest gentoo-sources, upgrading nvidia drivers to latest. No joy.
Downgraded the kernel to the highest supported by NVidia-drivers. No joy.
More googling and...

Solution:
Disable AMD-IOMMU in the bios.
XOrg now runs.

If you have these symptoms, the gentoo install CD nor live DVD will NOT work. In fact by the time you get to a console it will be too late and the r8169 driver will have already crashed the motherboard. It will come apart at the seems with failing USB controllers, NVidia drivers, etc. etc.

Other issues include:
Linux boot discs will not see the keyboard and mouse when connected to the USB2.0 sockets. The keyboard and mouse need to be in the USB3.0/2.0 slots. (Windows installer was the other way around).
If you are trying to boot a DVD, make sure and experiment with toggling the port 5/6 type in BIOS from SATA to IDE or vice versa. Windows 7 seems to only boot from IDE mode, but k3B will only detect the DVDRW if it was booted in SATA mode. (Depends on the DVDRW I suppose).

I haven't even got to sound yet.

Hopefully some of this may help a fellow googler.

What I don't understand is... this chipset was originally tested against 3.x kernels back in 2012 and the current revision is dated 2013... why have these wrinkles not be sorted out by now?

Paul
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chithanh
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Joined: 05 Aug 2006
Posts: 2152
Location: Berlin, Germany

PostPosted: Mon Mar 09, 2015 6:02 pm    Post subject: Reply with quote

The r8169 problem is also IOMMU related. Relevant kernel bugzilla entry. Every time a new revision of the RTL8169 props up, the kernel maintainers need to be bugged to add this to the list of quirky chips.

The NVidia proprietary driver is known to have problems with IOMMUs too.

Both problems can be worked around with iommu=pt kernel parameter, without the need to disable IOMMU in the BIOS. That way it can still be used for virtualization etc.
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