Ubuntu
linux package

Fix sluggish r8169 by disaling ASPM L1.2

Bug #1942830 reported by Kai-Heng Feng
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
HWE Next
Fix Released
Undecided
Unassigned
linux (Ubuntu)
Invalid
Medium
Unassigned
Focal
Invalid
Undecided
Unassigned
linux-oem-5.13 (Ubuntu)
Invalid
Undecided
Unassigned
Focal
Fix Released
Medium
Unassigned
linux-oem-5.14 (Ubuntu)
Invalid
Undecided
Unassigned
Focal
Fix Released
Medium
Unassigned

Bug Description

[Impact]
Realtek r8169 has abysmal network speed.

[Fix]
Disable ASPM L1.2 because the device takes a long time to exit from
L1.2.

[Test]
Use `iperf` to test network speed.
When ASPM L1.2 gets disabled, TX and RX and reach ~700Mbps and ~900Mbps
respectively.

[Where problems could occur]
Disabling ASPM L1.2 can slightly increase power consumption. The CPU
package C-State seems to be unaffected so the increase is rather minor.

CVE References

Kai-Heng Feng (kaihengfeng)
Changed in linux (Ubuntu Focal):
status: New → Invalid
Changed in linux (Ubuntu):
status: New → Confirmed
Changed in linux-oem-5.13 (Ubuntu):
status: New → Invalid
Changed in linux-oem-5.14 (Ubuntu):
status: New → Invalid
Changed in linux-oem-5.13 (Ubuntu Focal):
status: New → Confirmed
Changed in linux-oem-5.14 (Ubuntu Focal):
status: New → Confirmed
Changed in linux (Ubuntu):
importance: Undecided → Medium
Changed in linux-oem-5.13 (Ubuntu Focal):
importance: Undecided → Medium
Changed in linux-oem-5.14 (Ubuntu Focal):
importance: Undecided → Medium
tags: added: oem-priority originate-from-1934257 somerville
Revision history for this message
koba (kobako) wrote : Re: [Bug 1942830] [NEW] Fix sluggish r8169 by disaling ASPM L1.2

@KaiHeng,
with aspm 1.2 enabled, can't observe the issue on JSL machine.
Could you narrow down to one Realtek's model?

Revision history for this message
koba (kobako) wrote :
Timo Aaltonen (tjaalton)
Changed in linux-oem-5.13 (Ubuntu Focal):
status: Confirmed → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-focal
Kai-Heng Feng (kaihengfeng)
tags: added: verification-done-focal
removed: verification-needed-focal
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-5.13 - 5.13.0-1012.16

---------------
linux-oem-5.13 (5.13.0-1012.16) focal; urgency=medium

  * focal/linux-oem-5.13: 5.13.0-1012.16 -proposed tracker (LP: #1942861)

  * Fix sluggish r8169 by disaling ASPM L1.2 (LP: #1942830)
    - SAUCE: r8169: Disable ASPM L1.2

  * CVE-2021-3609
    - can: bcm: delay release of struct bcm_op after synchronize_rcu()
    - can: j1939: j1939_sk_init(): set SOCK_RCU_FREE to call sk_destruct() after
      RCU is done

 -- Timo Aaltonen <email address hidden> Tue, 07 Sep 2021 11:49:54 +0300

Changed in linux-oem-5.13 (Ubuntu Focal):
status: Fix Committed → Fix Released
Timo Aaltonen (tjaalton)
Changed in linux-oem-5.14 (Ubuntu Focal):
status: Confirmed → Fix Committed
Timo Aaltonen (tjaalton)
Changed in linux-oem-5.14 (Ubuntu Focal):
status: Fix Committed → Fix Released
Timo Aaltonen (tjaalton)
Changed in linux (Ubuntu):
status: Confirmed → Invalid
Timo Aaltonen (tjaalton)
Changed in hwe-next:
status: New → Fix Released
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