excessive boot time with nothing on screen but blinking cursor (some bios boxes only); ubuntu/lubuntu impish daily

Bug #1928939 reported by Chris Guiver
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
casper (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Lubuntu impish daily (QA-test) live boot on
- motion computing j3400 (c2d-u9400, 4gb, intel mobile 4 series)

At computerbank (CBV Victoria) we timed boots of Ubuntu installs and if they didn't meet a minimum requirement, the 'build' was failed meaning it had to be fixed, or box was recycled. (this is a live boot and not install boot, but I'm using this as example of issue)

This box was fine until somewhere during the hirsute cycle, when boot times suddenly booting took >8 minutes from a thumb-drive.

The ISO was written today with MKUSB (dd/clone), however the result during prior tests during the hirsute cycle is the same using
- mkusb (dd/clone write)
- dd
- gnome-disks (restore disk image)
Note: this is based on prior testing during hirsute, today's was just using mkusb (dd/clone)

** Expected result

A live boot should NOT take >8 mins

** Actual results

stopwatch started when I pressed <ENTER> for "Start Lubuntu" at grub menu

* 7 mins 20 secs for blue Plymouth screen to appear
* ~8 mins 0 secs for mouse pointer to show on black background (maybe 7 mins 57 secs b/c I'd dazed out)

* 8 mins 33 secs for background & Lubuntu/LXQt display to show

It's not the box is suddenly slow.. something changed during hirsute that caused the live session to boot slowly...

See comment #2 for results of booting the current focal daily (ie. what will become 20.04.3)

Comparison (current focal vs impish dailies)

                              Focal daily Impish daily
plymouth ~46 sec 7 mins 20 secs
scan media start ~50 sec
scan media pass 3 min 08 sec
black screen & mouse-pointer 3 min 32 sec ~8 mins 00 secs
full LXQt running 3 min 45 sec 8 mins 33 secs

** Conclusion

If the boot needs to be this slow - some messages on screen are needed !

FYI: duplicate of https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1922342 except this is impish; that bug was hirsute.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: casper 1.461
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu66
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.461
CurrentDesktop: LXQt
Date: Wed May 19 12:21:28 2021
LiveMediaBuild: Lubuntu 21.10 "Impish Indri" - Alpha amd64 (20210518)
SourcePackage: casper
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.casper.conf: 2021-05-19T12:14:28.696065

Revision history for this message
Chris Guiver (guiverc) wrote :
Chris Guiver (guiverc)
description: updated
Revision history for this message
Chris Guiver (guiverc) wrote :

Booted the current focal daily (what will become 20.04.3) on
- motion computing j3400 (c2d-u9400, 4gb, intel mobile 4 series)

Stop watch started at GRUB screen when I pressed ENTER for Start Lubuntu

~50 secs the plymouth screen was shown & it was validating media (showing % progress; this actually started in the 44-46 sec mark I suspect, I'm tired & had zoned out)
3 mins 08 secs and media has passed validation
3 mins 32 secs and black screen with Xorg mouse pointer drawn
3 mins 45 secs & Lubuntu/LXQt desktop is stable

So comparison (current focal vs impish dailies)

                              Focal daily Impish daily
plymouth ~46 sec 7 mins 20 secs
scan media start ~50 sec
scan media pass 3 min 08 sec
black screen & mouse-pointer 3 min 32 sec ~8 mins 00 secs
full LXQt running 3 min 45 sec 8 mins 33 secs

If the boot needs to be this slow - some messages on screen are needed !

description: updated
Revision history for this message
Chris Guiver (guiverc) wrote :
Revision history for this message
Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1928939

tags: added: iso-testing
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in casper (Ubuntu):
status: New → Confirmed
Revision history for this message
José Marinho (jmarinho) wrote :

I can confirm as the reporter of the bug present on Hirsute mentioned above that the bug persists in Impish and affects at least to regular Ubuntu in addition to Lubuntu.

Revision history for this message
Chris Guiver (guiverc) wrote :

See duplicate https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1929029

for comparison of times using Ubuntu daily.

Ubuntu impish daily written using GNOME-disks (restore image)

- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

takes 3 mins 30 secs to be fully operational

- motion computing j3400 (c2d-u9400, 4gb, intel mobile 4 series)

takes 11 mins 17 secs to become operational (same timing).

which includes 8 mins 5 secs of black screen & blinking cursor after grub before the first change on display occurs...

summary: - excessive boot time (some old bios boxes); ;lubuntu impish daily
+ excessive boot time with nothing on screen but blinking cursor (some
+ bios boxes only); ubuntu/lubuntu impish daily
Revision history for this message
Michael Hudson-Doyle (mwhudson) wrote :

Could you try the server ISOs as well? And maybe attach dmesg output from one of the systems after it has booted oh so slowly?

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.