[Bug 55784] [Ubuntu 12.04.1 LTS 32-bit] Unity GUI will hang during bootup with ATI Technologies Radeon X600 (RV380) and VIA Technologies PT880 Ultra chipset

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Nov 27 15:50:03 PST 2012


--- Comment #36 from mypersonalmailbox1 at mail.com ---
(In reply to comment #35)

Hi Alex,

I believe VIA Technologies PT880 Ultra chipset was released around 2005.
It is about 7 years old.
Personally, I don't consider anything with PCIe, "old."
I did update the BIOS to the last release version, and the board was made by
ASUS, probably a fairly responsible mainboard manufacturer.
I will also add that Radeon HD 4350 and HD 5450 exhibit the exact same problem
as Radeon X600 with this mainboard, last time I tested with Ubuntu 12.04 LTS
Furthermore, Radeon X600 (PCIe) is similar to Radeon 9800 Pro (AGP)
generationally, and this mainboard works fine with Radeon 9800 Pro.
        Do you have any idea who worked on other VIA Technologies related
device drivers?
Do you know the names of the developers/maintainers?
Furthermore, if I wanted to look into the issue myself, how do I analyze what
the Linux kernel is doing?
How do I get started on fixing device driver bugs myself with Linux?
As for myself, I have full Xilinx FPGA-based PCI DMA engine design experience
(PCI interface portion and DMA engine portion) and Windows device driver (WDM)
development experience.
I have used WinDbg in the past to get my Windows device driver working (i.e.,
To get the device driver to function correctly, and prevent Windows kernel
How different will Linux device driver development/bug fix be different than



> Someone more familiar with this specific chipset will probably have to take
> a look at this.  This seems more like a chipset or bios bug than a driver
> bug.  Unfortunately this is a ~10 year old chipset that was never known for
> stability.  I had a similar old VIA board (PCIE only) and it had a number of
> problems including that the system wouldn't boot at all with certain cards
> installed.  You might google for setpci workarounds for these boards.  I
> vaguely recall some workarounds requiring setpci to adjust certain pci
> config registers to get certain pci cards to work.

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