I am still running FC6 on a Compaq Presario V6107AU notebook with an AMD Turionx64 x2, although I am still using an x86 kernel: $ uname -mprv 2.6.20-1.2948.fc6 #1 SMP Fri Apr 27 19:48:40 EDT 2007 i686 athlon When I initially tried to install FC6 on this notebook, the only I was able to boot was by adding the noapic kernel parameter. During all that time, I always have this error on dmesg: irq 7: nobody cared (try booting with the "irqpoll" option) [<c044f74a>] __report_bad_irq+0x36/0x7d [<c044f92b>] note_interrupt+0x19a/0x1d7 [<c044eec1>] handle_IRQ_event+0x1a/0x3f [<c0450230>] handle_level_irq+0xa7/0xdf [<c0450189>] handle_level_irq+0x0/0xdf [<c0406268>] do_IRQ+0xb5/0xdd [<c04048f3>] common_interrupt+0x23/0x28 [<c0402d52>] default_idle+0x0/0x3e [<c0402d7e>] default_idle+0x2c/0x3e [<c04023d0>] cpu_idle+0x9e/0xb7 [<c074b812>] start_kernel+0x3b6/0x3be [<c074b25a>] unknown_bootoption+0x0/0x202 ======================= handlers: [<c05877a3>] (usb_hcd_irq+0x0/0x4e) Disabling IRQ #7 I also have a built-in nVidia graphics controller and an nVidia chipset. I am also now using nVidia's proprietary graphics driver. However, I realised later that the only way I could get high-speed working with my USB 2.0 devices was if I _remove_ the "noapic" kernel parameter. That is, if I have noapic, I only get up to full-speed ( 12Mbps ). Without noapic, I get high-speed ( 480Mbps ). What's more, I occassionally get lock-ups with X if I do not have noapic. To summarise my problems: 1) If I have noapic, I am not able to achieve high-speed with my USB 2.0 devices, but I do not seem to get any lock-ups with X. 2) If I do not have noapic, I am able to achieve high-speed with my USB 2.0 devices, but I occassionally get lock-ups with X ... say once or twice a day ... most often during screen savers. I am using "The Matrix" screen saver, but _not_ the opengl version. What is also interesting was that, in the intial kernel that came with the FC6 CD, the only way I was able to boot was with the noapic parameter. So through all the kernel upgrades, I always have noapic ... until about last month when I tried to get high-speed USB working and tried _not_ having noapic. So I was surprised that with later kernels, I was able to actually boot without having noapic. Any ideas ? Suggestions ? How can I have high-speed USB 2.0 working _and_ not having to deal with lock-ups with X? Regards, John
