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Razor hardware only works on USB 3 ports (re-opened)
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<3
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PostPosted: Sun Aug 06, 2017 1:34 am    Post subject: Razor hardware only works on USB 3 ports (re-opened) Reply with quote

Hi, I have a Razor Deathadder 1500dpi mouse and the Razor Deathstalker keyboard. Both work perfectly fine on my laptop when I boot into Windows 7 but if I boot into Gentoo GNU/Linux neither seem to work unless I plug them into my USB 3 port which is weird. Since I only have one USB 3 port and I don't have a USB hub I cannot use both at the same time in Linux. Is anyone else having this issue? Any possible solution to this problem?

Last edited by <3 on Sun Aug 27, 2017 4:56 pm; edited 2 times in total
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Fitzcarraldo
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PostPosted: Sun Aug 06, 2017 2:02 am    Post subject: Reply with quote

Are the mouse and keyboard USB 2 devices? If so, do you by any chance have CONFIG_USB_EHCI_HCD=n (USB 2 support disabled) in your kernel configuration?
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PostPosted: Sun Aug 06, 2017 4:12 am    Post subject: Reply with quote

They are USB2 devices, both were released before USB3 was finalized and both work in Windows on the USB2 ports.

In my kernel .config I have
Code:
CONFIG_USB_EHCI_HCD=y
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Fitzcarraldo
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PostPosted: Sun Aug 06, 2017 12:21 pm    Post subject: Reply with quote

Do you also have CONFIG_USB_OHCI_HCD=y and CONFIG_USB_UHCI_HCD=y? If not, might be worth trying those too to see if they change anything. If other USB 2 devices work when plugged into the USB 2 ports, I wonder if the problem is due to the Razer drivers?
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NeddySeagoon
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PostPosted: Sun Aug 06, 2017 12:52 pm    Post subject: Reply with quote

<3,

In your Gentoo, connect both devices to USB 2.
Boot the system.

Post the output of lsusb
Put dmesg onto a pastetbin
Put your kernel config onto a pastebin.

I have a dim memory that Razor Deathadder/Deathstalker equipment is not properly USB HID compliant and needs a Special HID drivers kernel option.
I don't recall which one but the above info should help narrow it down, if my memory is correct.
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PostPosted: Sun Aug 06, 2017 1:40 pm    Post subject: Reply with quote

NeddySeagoon,

Looks like you're on to something there. I've just noticed the following in the Gentoo Wiki:

evdev - Gentoo Wiki wrote:
Some USB mice (e.g. Logitech G5 and Razer Naga 2014) additionally need the following option:
KERNEL Improved transaction support

Device Drivers --->
[*] USB support --->
[*] Improved Transaction Translator scheduling

i.e. CONFIG_USB_EHCI_TT_NEWSCHED=y.
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KDE on both.

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PostPosted: Sun Aug 06, 2017 2:12 pm    Post subject: Reply with quote

Fitzcarraldo,

That allows USB2 hardware that supports transaction translation to support USB1 speed devices directly.
USB 3 will drive USB 1 devices without any extra options.

Well spotted.

It depends on the USB 2 root hubs, rather than the USB 1 devices that are connected.
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PostPosted: Sun Aug 06, 2017 5:27 pm    Post subject: Reply with quote

I'm not sure which one of those kernel options did it as I enabled them all at the same time, recompiled then rebooted. Now the mouse & keyboard work. SOLVED!
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PostPosted: Sun Aug 27, 2017 4:55 pm    Post subject: Reply with quote

Not sure if this is related but I am still having problems with my input devices. Sometimes when I reboot my kb/mouse don't world sometimes they do, I usually have to reboot a few times before they work.
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