bluetooth file transfer via bluetooth UI is too slow
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Bluez Utilities |
Confirmed
|
Medium
|
|||
bluez (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
OS: Ubuntu 20.04
Kernel: 5.4.0-31-generic
When using the UI to connect and transfer the file form one machine to another machine, BASIC mode is getting selected in the L2CAP configuration and continuous scan is not going on in both sides. the L2CAP MTU size is also in 672, which is very small. Even with the patch applied by Intel, it does not increase the TPT because the UI always selects BASIC mode.
Sample File transfer duration:
sending - (8MB) 5min 18s
sending - (12MB) 7min36s
receiving - (8MB) 4min 8s
receiving - (12MB) 5min 48s
**This issue was also observed in Ubuntu 18.04 OS
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: bluetooth (not installed)
ProcVersionSign
Uname: Linux 5.4.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckR
CurrentDesktop: ubuntu:GNOME
Date: Tue May 19 14:46:11 2020
InstallationDate: Installed on 2020-05-19 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
InterestingModules: rfcomm bnep btusb bluetooth
MachineType: LENOVO 20U9SITR39
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/12/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2WET11C (1.01C )
dmi.board.
dmi.board.name: 20U9SITR39
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad X1 Carbon Gen 8
dmi.product.name: 20U9SITR39
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: D8:3B:BF:7A:E4:22 ACL MTU: 1021:4 SCO MTU: 96:6
UP RUNNING
RX bytes:22494299 acl:63654 sco:0 events:77112 errors:0
TX bytes:45158198 acl:65574 sco:0 commands:7661 errors:0
Changed in bluez: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Thank you for your bug report, you seem to have an understanding of the technical details of the issue, maybe you could report it upstream directly on https:/ /bugzilla. kernel. org ?