ksplash hangs on initializing system services sometimes if "Start with an empty session" is enabled
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| kdebase (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Bug Description
Binary package hint: ksplash
ksplash in Dapper is hanging sometimes at "initializing system services".
This only happens if "Start with an empty session" from the Session Manager settings (in KDE Components in System Settings) is the choice for "On Login". The hang can be skipped by clicking. The underlying startup process continues as normal during the hang, if you wait long enough through the hang and then click, a fully ready desktop environment will be ready. Top doesn't reveal any abnormal cpu or memory usage.
The hang occurs more often when my cpu is clocked at 600MHz, and less often at 1.5GHz. I haven't seen it happen when using KDM instead of GDM at the higher clock rate. At the lower clock rate it doesn't matter which display manager is being used. The bug is potentially a race condition.
The hang ends after about 60 seconds on both cpu speeds. The icons after "initializing system services" don't light up after the hang ends, the desktop just appears.
I've seen this bug on multiple computers with different graphics chipsets, in all cases using only the free graphic drivers from main. I've been able to replicate this on new clean accounts with only the "On Login" session restore setting changed. I've seen this happen to both the kde default splash and kde wheat. In all cases the latest packages from Dapper were in use.
Sometimes a small white rectangle appears in the top left corner right after the hang begins.
At high clock rates I have sometimes seen the desktop that you would expect to see after the splash screen appear first, followed by the hanging splash screen.
| Mark Jenkins (mark-parit) wrote | #1 |
| Mark Jenkins (mark-parit) wrote | #2 |
| Mark Jenkins (mark-parit) wrote Patch to startkde to make race condition more obvious | #3 |
| Mark Jenkins (mark-parit) wrote | #4 |
| Mark Jenkins (mark-parit) wrote patch to fix race condition due to too early fork in ksplash | #5 |
| gmax.jp (gmax-jp) wrote | #6 |
| Yuriy Kozlov (yuriy-kozlov) wrote | #7 |
| Anthony Mercatante (tonio) wrote | #8 |
| Changed in kdebase: | |
| status: | Unconfirmed → Fix Released |
More information.
If I take a new clean account and change to the "Start with an empty session" setting there is no problem. If I logout, login, change back to the default of restoring the saved session, logout, login, change back to "Start with an empty session", logout, and login the problem appears.