Bug 19112
| Summary: | 2.6.32.20 and 2.6.35.4 regression: Acer notebook does not power off but shutdown only | ||
|---|---|---|---|
| Product: | ACPI | Reporter: | Alex (alevkovich) |
| Component: | Power-Off | Assignee: | acpi_power-off |
| Status: | CLOSED CODE_FIX | ||
| Severity: | blocking | CC: | acpi-bugzilla, lenb, rjw |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.35.x and I think >= 2.6.32.21 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Bug Depends on: | |||
| Bug Blocks: | 7216 | ||
| Attachments: | system log | ||
forgot to say - arch is amd64. Is the Ubuntu's 2.6.32-23 a counterpart of 2.6.32.23 from kernel.org? No, Ubuntu's 2.6.32-23 based on 2.6.32.21. what is the latest upstream kernel that works? 2.6.32.20 worked ok. May be (no idea) 2.6.35.1 is ok too. I tested 2.6.35 kernels started from 2.6.35.4. can you isolate which kernel between 2.6.32.20 and 2.6.35.4 causes the problem? 2.6.32.21 causes the problem for me. But the basic question is: why does it wait the key pressing from me at all? Does kernel code contain something like getch()? Please say me where is this code and I will isolate this part for me. 2.6.32.20 works and 2.6.32.21 fails? Okay, that is great, can you bisect which patch between those stable releases introduced the problem? The only one that jumps out at me is 82c09de9159a15a8892bc0d732383febd6220ab6 "x86, apic: ack all pending irqs when crashed/on kexec" so you could start by reverting that patch to see if it caused it -- maybe we'll get lucky:-) No, the kernel is not doing a getch(), but it is likely that there is an issue with a timer not working and so that the interrupts of the keyboard are causing the system to wake up and continue working... Yes, I have found it powers off ok if hpet=disabled. So I'm forced to agree: it is timer problem. Also I have found that hpet problems is fixed (may be is not fixed but disguised) with 2.6.36-rc8. It is because the kernels from 2.6.32 to 2.6.35 have the problems with kde4 games. Any games (where timer is used) work in discontinuous manner (for example: ball twitches during its movement). Also the system powers off ok with 2.6.36-rc8 and hpet enabled. But I have found other strange issues with the kernels >= 2.6.35 (or may be it is xorg 1.9.0 + nvidia problem): mplayer using xv eats more cpu and any mouse movement in menu or toolbar is cause the interruptions of video or sound. I increased the latency of sound card (using setpci) and it seems the interruption of sound is discontinued but video is still slowest. Nvidia driver - 260.19.12. I think this bug can be closed for now :) |
Created attachment 31532 [details] system log Ubuntu waits any key press from me to power off notebook completely. I think shutdown is ok because hard disks powers off( only motherboard cooler is working).Notebook is Acer Aspire 7520G. Earlier it worked ok with the same configuration. All generic Ubuntu kernels are ok, preempt kernels are wrong beginning from 2.6.32-23. I tried 2.6.35.4 and .5 kernels and they are both wrong for me. I have also Winxp x64 installed and it is ok. There are no any wrong message in system log. ACPI is working ok. The system hangs and waits the key press after halt -f -p -i -d command started.