Bluetooth mouse lag with heavy wifi traffic on Samsung NC10

[Bart Samwel]

Binary package hint: bluez

On my Samsung NC10 netbook, if the wireless network traffic is high (e.g. 800 kb/s download) the bluetooth mouse starts lagging several seconds. This makes it unusable, I have to resort to using the touchpad which is fine. This is on up-to-date jaunty as of right now.

[Rolf Leggewie (r0lf)]

I wonder if bug 334957 and bug 334549 share some commonality?

It was suggested in #ubuntu-bugs to look into shared interrupts.

[Rolf Leggewie (r0lf)]

Please give us the output of "lsusb" and "cat /proc/interrupts"

[Bart Samwel (bart-samwel)]

I just posted the output of "lsusb -vv" and "cat /proc/interrupts".

[Przemysław Kochański (kochas315)]

That happens at Ubuntu 9.04 with lenovo n200 laptop and microsoft bluetooth notebook mouse 5000 too.

[Stefan Handschuh (handschuh)]

Happens also on my dell m1330.

The lag exists only since 8.04!

Topic should be changed to ~"Bluetooth input device lag".

[Przemysław Kochański (kochas315)]

I can see no mouse lag on 9.10!

[Aurius Bendikas Chang (aurius-bendikas)]

My Bluetooth mouse is lagging to on even average wireless traffic on Lenovo T400. And this is easy to reproduce for me, just start transmission over wireless and once traffic is about 200 - 300 KBps the mouse is useless. I am using Ubuntu 9.10.

[dwaynemac (dwaynemac)]

I'm having this bug on Dell Vostro V13

[Axel Lewenhaupt (axel-x2d)]

I think I have the same problem on an Asus 1215n using ubuntu 10.10. When I browse the web the bluetooth mouse starts to lag a lot and as soon as a page is fully loaded it stops again.

[entonjackson (aj-mysc)]

Same here on a Dell Precision M4400
I don't know which bluetooth chip exactly... also on high wifi traffic.

but I already had this problem on another Dell Laptop with a bluetooth dongle plugged in. Everytime i use another bluetooth device with it parallel to my bt mouse.

Really annoying bug!

[Guillaume Poirier-Morency (arteymix)]

Not sure, but I think that the problem is physical. High wifi traffic probably interfers with the bluetooth signal. If you can manage to get the adapter close to your device (using a USB extension), I think you should be fine. I'll stick the adapter under my desk and I'll give you guys some feedback on that.

[entonjackson (aj-mysc)]

No it's not physical.
Works fine under Windows 7.

[Rolf Leggewie (r0lf)]

entonjackson, I've had similar problems in the past so I know the frustrations. This is very hardware independent so I think it's better for each person to open their own ticket (unless of course you happen to have the EXACT same hardware). Please open a new ticket with "ubuntu-bug /boot/vmlinuz-$(uname -r)". These kind of hardware issues are notoriously difficult to troubleshoot and there is no guarantee any of the devs will have the chance to look at it in a timely manner. Feel free to point to this ticket from your own to indicate the similarity of the issues you see. You can also subscribe me to your ticket and I will try and have a look, but no guarantees. Please test with Ubuntu mainline kernel as well (http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/) and attach /proc/interrupts after you've triggered the problem and let the computer run for a few minutes. Hopefully that will give us something to chew on.

Let's focus on Bart's Samsung netbook exclusively in this ticket. Bart, are you still experiencing this problem?

[entonjackson (aj-mysc)]

has something changed here in the meanwhile?
i still have the same issue on dell notebooks. either with a MS Notebook Mouse or a Dell BT Travel Mouse...
This is on of the most annoying bugs under Ubuntu... REALLY!

[Rykel from Singapore (rykel98)]

I am using Ubuntu 12.10 fully updated on Dual Boot with Windows 7 Home Edition on a ASUS 1215B and a Prolink Bluetooth Mouse PMO624B and the mouse lag is intolerable. It does NOT lag in Windows 7 and the touchpad has no problem. Please help!

$lsusb
Bus 002 Device 002: ID 13d3:5702 IMC Networks UVC VGA Webcam
Bus 003 Device 002: ID 13d3:3315 IMC Networks Bluetooth module
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

$ cat /proc/interrupts
           CPU0 CPU1
  0: 47 0 IO-APIC-edge timer
  1: 1558 1933 IO-APIC-edge i8042
  7: 1 0 IO-APIC-edge
  8: 0 1 IO-APIC-edge rtc0
  9: 1493 317 IO-APIC-fasteoi acpi
 12: 103078 1473 IO-APIC-edge i8042
 16: 172765 27932 IO-APIC-fasteoi brcmsmac, snd_hda_intel
 17: 54 23 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2, eth0
 18: 186031 49860 IO-APIC-fasteoi ohci_hcd:usb3, ohci_hcd:usb4, radeon, xhci_hcd:usb5
 19: 28046 27112 IO-APIC-fasteoi ahci, snd_hda_intel
NMI: 18 112 Non-maskable interrupts
LOC: 843205 837007 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 18 112 Performance monitoring interrupts
IWI: 0 0 IRQ work interrupts
RTR: 0 0 APIC ICR read retries
RES: 1074454 991686 Rescheduling interrupts
CAL: 27239 348 Function call interrupts
TLB: 49390 64516 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 13 12 Machine check polls
ERR: 1
MIS: 0

[Rykel from Singapore (rykel98)]

P/S. I just DISABLED Wifi and the Mouse works, then with Wifi turned ON, the Mouse lags again by a little bit. I believe this is a case of wifi vs. Bluetooth so perhaps we could start investigating from here? (again, this lag does NOT take place in Windows 7)

[Rykel from Singapore (rykel98)]

UPDATE 18 March 2013 - My Prolink Bluetooth Mouse PMO624B still lags on a fresh and up-to-date installation of Ubuntu 12.10 on a ASUS EeePC 1215B with AMD Brazos APU.

[Rykel from Singapore (rykel98)]

Sorry I meant to say "still lags WITH OR WITHOUT WIFI TURNED ON on a fresh and up-to-date..." .

[Konrad Zapałowicz (kzapalowicz)]

This is reported against an old version of Ubuntu and many things has changed since then. Because of that we won't fix this issue however if this behavior repeats on a modern version please fill a bug report against it and we will take it from there.