Bug 13449
| Summary: | Battery disappears after suspend/resume on HP laptop. | ||
|---|---|---|---|
| Product: | ACPI | Reporter: | Gustavo Vieira (gustavo) |
| Component: | Power-Sleep-Wake | Assignee: | acpi_power-sleep-wake |
| Status: | CLOSED CODE_FIX | ||
| Severity: | normal | CC: | alebetco, astarikovskiy, lenb, rui.zhang, yakui.zhao |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.30.8 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
dmesg after suspend/resume
Kernel config acpidump output dmesg after suspend/resume with debug on acpidump output before suspend acpidump output after resume [PATCH 1/1] ACPI: add DMI entry for SCI_EN resume quirk on HP dv4 |
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please attach kernel config. Created attachment 21752 [details]
Kernel config
Please provide acpidump output. Please recompile kernel with '#define DEBUG' uncommented in drivers/acpi/ec.c and attach output of dmesg. Created attachment 21754 [details]
acpidump output
Created attachment 21757 [details]
dmesg after suspend/resume with debug on
hm, it looks like EC tries to send something to HP_WMI driver, do you have it loaded after resume? Please add some printk() to hp_wmi_notify() in drivers/platform/hp-wmi.c (In reply to comment #6) > hm, it looks like EC tries to send something to HP_WMI driver, do you have it > loaded after resume? The hp-wmi driver isn't loaded before suspend or after resume. Only the wmi is present in both situations. > Please add some printk() to hp_wmi_notify() in drivers/platform/hp-wmi.c Done. The hp_wmi_notify() function is never called. Hi, Gustavo
Will you please attach the following output before and after suspend/resume?
acpidump --addr 0xBBBBEED4 --length 0x000000CF -o nvst
Thanks.
Created attachment 22239 [details]
acpidump output before suspend
Created attachment 22240 [details]
acpidump output after resume
(In reply to comment #8) > Hi, Gustavo > Will you please attach the following output before and after > suspend/resume? > acpidump --addr 0xBBBBEED4 --length 0x000000CF -o nvst Done. Created attachment 23467 [details] [PATCH 1/1] ACPI: add DMI entry for SCI_EN resume quirk on HP dv4 This is the same issue as bug# 13745 but on different hardware. The fix is similar. Also, this makes it a regression. I'm attaching a patch that I have tested on my system (2.6.30.8 and 2.6.32-rc5) and solves the bug. Alexey, can you reassign this to "Power-Sleep-Wake"? Thanks. I think we've already have a patch (comment #12) for this issue, right? please re-open it if I'm wrong. Yes and no. :) We have a patch, but it isn't applied in any tree. I just created it and attached to this bugzilla. I assumed it would be picked up. Who should I tell about it? Gustavo, If you have a patch, which solves a bug, this bug should be marked RESOLVED/CODE_FIX. This is a clue for Len Brown (maintainer of whole Linux ACPI thing) to pick it up and send to Linus for inclusion into the next kernel. I'm switching RESOLVED/CODE_FIX now, so this is now up to Len to pick it up. i have the same problem with compaq presario laptop: Vendor: Hewlett-Packard Product Name: Compaq Presario CQ40 Notebook PC patch in comment #12 applied to acpi tree drivers/acpi/sleep.c DMI for dv4 and CQ40 shipped in Linux 2.6.32-rc7 closed. more activity on this topic is in bug 13745 |
Created attachment 21740 [details] dmesg after suspend/resume My HP Pavilion dv4-1125br suspends and resumes correctly. However, the battery information provided by ACPI disappears. Before suspend I can get battery information in /proc/acpi/battery/BAT0/state. After the suspend/resume, BAT0/state shows not present. This is a fairly recent laptop, and this problem is present in Fedora kernels as early as 2.6.27. I've found bug reports of this issue for Ubunto and Arch Linux, so I don't believe it is Fedora specific.