Hello zbiggy :-) For what it's worth, I can confirm this bug. Happens on my system (MCP78S) as well. Jean On Sun, 15 Apr 2012 22:18:27 +0200 Zbigniew Luszpinski <zbiggy@xxxxx> wrote: > Hello, > > I post here this still unresolved bug because of: > Comment #26 From Greg Kroah-Hartman 2012-02-22 21:07:17 > > All USB bugs should be sent to the linux-usb (*) vger, kernel, org > mailing list, and not entered into bugzilla. Please bring this issue > up there, if it is still a problem in the latest kernel release. > > Problem: > USB 1.1 OHCI Nvidia controller: > 00:02.0 USB controller [0c03]: nVidia Corporation MCP78S [GeForce > 8200] OHCI USB 1.1 Controller [10de:077b] (rev a1) 00:04.0 USB > controller [0c03]: nVidia Corporation MCP78S [GeForce 8200] OHCI USB > 1.1 Controller [10de:077d] (rev a1) freezes under heavy use of full > speed devices. This problem is present on all MCP7x chipsets (nForce > 7xx, Geforce8xxx,9xxx mainboards). Daniel Dadap from Nvidia > reproduced and confirmed the bug but no fix was provided. > > Systems affected: all Linuxes (any distro 32/64bit: > ubuntu,rhel,fedora,suse,mandrake,lunar), all kernel versions up to > and including vanilla kernel 3.3 Systems not affected: everything > without Linux kernel: FreeBSD 9.0, OpenSolaris 2009.06, Windows XP > Pro SP3 32bit. All non affected systems use default generic system > provided drivers. No any updates, external drivers or patches were > used. Systems tested 'out of the box'. What is different in common > Linux APIC implementation that all Linuxes fail and other OSes works > perfect with Nvidia OHCI implementation in MCP7x chipset? > > hardware workaround: > Use external usb 1.1 card (NEC chipset based cards also use ohci > driver for usb and works great on MCP7x chipset mainboard). > > software workaround: > Boot kernel with noapic or acpi=noirq parameter. Both do the same: > disable APIC and use PIC interrupts. > > More here: > https://bugzilla.kernel.org/show_bug.cgi?id=13405 > https://bugzilla.kernel.org/show_bug.cgi?id=14072 > > Because for many years nobody was able to make a fix for this how > about printing warning when 10de:077b, 10de:077d controllers are > detected and APIC is active: "This usb 1.1 controller freezes on > Linux when APIC is enabled. Use noapic or acpi=noirq kernel boot > parameters to workaround or use PCI/PCIe card with usb ports for usb > 1.1 devices" > > have a nice day, > Zbigniew Luszpinski > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" > 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-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
