Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.debian.kernel > #63703 > unrolled thread

Bug#925496: Problem comes back with "EPU Power Saving Mode" enabled in the BIOS

Started byMike Crowe <mac@mcrowe.com>
First post2019-03-27 16:20 +0100
Last post2019-04-01 11:10 +0200
Articles 3 — 2 participants

Back to article view | Back to linux.debian.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.


Contents

  Bug#925496: Problem comes back with "EPU Power Saving Mode" enabled in the BIOS Mike Crowe <mac@mcrowe.com> - 2019-03-27 16:20 +0100
    Processed (with 2 errors): Problem comes back with "EPU Power  Saving Mode" enabled in the BIOS "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-03-27 16:20 +0100
    Bug#925496: Fix pending upstream Mike Crowe <mac@mcrowe.com> - 2019-04-01 11:10 +0200

#63703 — Bug#925496: Problem comes back with "EPU Power Saving Mode" enabled in the BIOS

FromMike Crowe <mac@mcrowe.com>
Date2019-03-27 16:20 +0100
SubjectBug#925496: Problem comes back with "EPU Power Saving Mode" enabled in the BIOS
Message-ID<xGivn-1Iq-1@gated-at.bofh.it>
Control: reopen -1
Control: found linux/4.19.28-2
Control: tags upstream

I wrote:
> However, this inspired me to check the BIOS version on the Asus H87M-E
> motherboards we're using. Both were using the rather ancient version
> 1001. I upgraded one machine to the latest version 2201 and the problem
> went away, even with the Debian stock 4.19.0-4-amd64 (4.19.28-2) kernel.

I spoke to soon. Upgrading the BIOS didn't work on the other afflicted
machine.

It turns out that on the machine that worked the BIOS "EPU Power Saving
Mode" setting was set to "Disabled". Changing this to "Enabled" (as is done
by the "ASUS Optimal" setting on the BIOS front page) causes the high
packet latency problem to return.

I've sent an email[1] to the netdev mailing list describing the problem,
but afterwards I discovered that someone else has also reported[2] what
looks like the same problem.

Mike.

[1] https://lore.kernel.org/netdev/20190327150546.dgt54rchfumhaap5@mcrowe.com/T/#u
[2] https://lore.kernel.org/netdev/CAMLO_R7Q6QCr7KX5goOvJ_BzDLU_tnw3UkMKzwDmL4C2BHubVA@mail.gmail.com/

[toc] | [next] | [standalone]


#63704 — Processed (with 2 errors): Problem comes back with "EPU Power Saving Mode" enabled in the BIOS

From"Debian Bug Tracking System" <owner@bugs.debian.org>
Date2019-03-27 16:20 +0100
SubjectProcessed (with 2 errors): Problem comes back with "EPU Power Saving Mode" enabled in the BIOS
Message-ID<xGivn-1Iq-7@gated-at.bofh.it>
In reply to#63703
Processing control commands:

> reopen -1
Bug #925496 {Done: Mike Crowe <mac@mcrowe.com>} [src:linux] linux-image-4.19.0-2-amd64: Latency increase with r8169 and default coalescing settings
Bug reopened
Ignoring request to alter fixed versions of bug #925496 to the same values previously set
> found linux/4.19.28-2
Unknown command or malformed arguments to command.

> tags upstream
Unknown command or malformed arguments to command.


-- 
925496: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925496
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

[toc] | [prev] | [next] | [standalone]


#63738 — Bug#925496: Fix pending upstream

FromMike Crowe <mac@mcrowe.com>
Date2019-04-01 11:10 +0200
SubjectBug#925496: Fix pending upstream
Message-ID<xI174-8B-1@gated-at.bofh.it>
In reply to#63703
Control: found -1 linux/4.19.28-2
Control: tags -1 + patch

The upstream maintainer has provided a workaround[1] for this which has
apparently been queued[2] for stable, so I imagine that the fix will be
merged in due course.

Mike.

[1] https://lore.kernel.org/netdev/e2e76e38-3155-e421-deeb-4ec05d1032a2@gmail.com/
[2] https://lore.kernel.org/netdev/e2e76e38-3155-e421-deeb-4ec05d1032a2@gmail.com/

[toc] | [prev] | [standalone]


Back to top | Article view | linux.debian.kernel


csiph-web