** Description changed:
Binary package hint: acpi
In summary, on Toshiba Tecra 8000 laptop (and maybe others)
1) Although ACPI couldn't be used with 7.10, the power switch did a marvelous
suspend/wakeup.
- 2) ACPI now works with 8.04 but wakeup crashes
+ 2) ACPI now works with 8.04 but wakeup crashes
+ 3) I'm afraid ACPI works beautifully with Windows XP.
- I'm trying to introduce Ubuntu in Belarus !!!
- I'd like a guest child to return to Belarus in August with a nice gift : a
clean 8.04 to run on that excellent spare Tecra 8000 laptop.
+ Please note : I'm trying to introduce Ubuntu in Belarus !!!
+ I'd like a guest child to return to Belarus in August with a nice gift :
+ a clean 8.04 to run on that excellent spare Tecra 8000 laptop.
I'm willing to do everything I can to help fixing this problem.
Thanks for the marvellous work you're all doing.
Here are the results of my tests of basic ACPI in 7.10 and 8.04 :
The Tecra 8000 is a late 1999 computer.
So, acpi=force is needed for ACPI to run.
Tests were made with (forced) and without ACPI.
- In conclusion, the differences are :
- - 7.10 has no ACPI power off and 8.04 has, but only with acpi= force
- - 7.10 without ACPI does a very fast (supposedly BIOS) power switch
suspend/restore that no longer works in 8.04 and with ACPI, 8.04 does a slower
suspend and does not restart.
-
7.10 :
- - With ACPI, an unexplained CPU loop occurs. As TOP spreads the CPU load
- across all processes, chances are that it's something like a badly
- cleared interrupt recurring. Hence, tests with ACPI were impossible in
- that release.
+ - When ACPI is forced, an everlasting CPU loop starts during boot. As
+ TOP shows the CPU load spread across all processes, chances are that
+ it's something like a recurring interrupt. System is so slow that tests
+ with ACPI were impossible in that release.
- Without ACPI :
- - Shutdown does not turn power off, needs a power button long press.
+ - Shutdown does not turn power off, needs an additional power button long
press.
- Suspend does turn the power off and turning it on seems to want to
restart but the computer hangs right after writing an incomplete bit of a text
message on the screen.
- BUT BUT BUT, pressing the power button does a very nice and fast
suspend/restart.
- 8.04a4 (tested with live CD, soon getting disk and partitioning to
- install) :
+ 8.04a4 :
- With ACPI, thanks goodness, the CPU loop is gone, but ...
- Shutdown turns the power off all-right
- - Suspend works but restart is followed by a black screen and dead computer.
+ - Suspend works but restart, after some disk activity, is followed by a
black screen and a seemingly dead computer. Yet, I remember having typed an
Crtl-Alt-something and seen a faint desktop before the whole thing died away.
- Hibernate is unavailable (not in the menu).
- Power switch displays the Shutdown menu.
- Closing the computer lid suspends, but opening it kills the laptop too.
- Without ACPI (normally) :
- - Shutdown does not turn power off, needs a power button long press.
+ - Shutdown does not turn power off, needs an additional power button long
press.
- Suspend is unavailable (not in the menu).
- Hibernate is unavailable (not in the menu).
- Power switch short press does suspend, but after restart the screen is
restored but the computer hangs (no keyboard, frozen mouse)
- - Additionally, when Cancel is clicked in the Shutdown menu, the Shutdown
menu is displayed again.
+
+ In conclusion, the differences are :
+ - 7.10 has no ACPI power off and 8.04 has, but only with acpi= force
+ - 7.10 without ACPI does a very fast (supposedly BIOS?) power switch
suspend/restore that no longer works in 8.04 and with ACPI, 8.04 does a slower
suspend but does not restart.
--
ACPI wakeup crashes on Toshiba (Tecra 8000)
https://bugs.launchpad.net/bugs/193738
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