Red Hat Bugzilla – Full Text Bug Listing
|Summary:||Sensors applet failed to read /proc/* after upgrade to 2.6.22-.1-33.fc7|
|Product:||[Fedora] Fedora||Reporter:||Edmond Hui <ymehui>|
|Component:||gnome-applet-sensors||Assignee:||Hans de Goede <hdegoede>|
|Status:||CLOSED NOTABUG||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2007-08-03 09:02:26 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Edmond Hui 2007-07-29 08:59:01 EDT
Description of problem: The GNOME sensors applet failed to read sensor info from /proc after kernel upgrade. Version-Release number of selected component (if applicable): kernel-220.127.116.11-33.fc7 lm_sensors-2.10.3-2.fc7 gnome-applet-sensors-1.8.1-1.fc7 How reproducible: reproducible every time Steps to Reproduce: 1. upgrade to 2.6.22 kernel via yum 2. login to GNOME and add gnome sensor applet 3. Actual results: see attached screen shot Expected results: no impact Additional info:
Comment 1 Edmond Hui 2007-07-29 08:59:01 EDT
Created attachment 160187 [details] screenshot of error
Comment 2 Hans de Goede 2007-07-29 09:10:42 EDT
Its quite well possible that these files have moved, confusing the sensors-applet, can you do: ls -R /proc/acpi And report the output here. Also can you try adding the sensors applet to your panel a second time (preferably to another panel if you have more then one) Then it will redetect which sensors are there. Hopefully it will find the sensors in their new place, then this can be fixed by simply removing the applet and then adding it again. If the new applet doesn't find the sensors, then we will have to dig deeper.
Comment 3 Edmond Hui 2007-07-29 12:16:07 EDT
Only CPU sensor left after uninstall+re-install....
Comment 4 Edmond Hui 2007-07-29 12:17:38 EDT
Created attachment 160196 [details] ls -l from /proc/acpi
Comment 5 Hans de Goede 2007-07-29 13:41:17 EDT
Hmm, no more acpi directory. I happen to have an 2.6.23 rc1 kenrel tree on my disk, so I directly went to the ibm_acpi now thinkpad_acpi driver source, they did some pretty major surgery on the interface to make it more standard (good), but forgot to keep the old interface for backward compatibility (bad). So this really is a kernel bug, but marking it as such isn't going to help you. So instead I'll write libsensors support code for this, as the thinkpad_acpi driver now uses the standard hwmon interface, which is supported in gnome-applet-sensors through libsensors, but first libsensors must be thought about the new thinkpad_acpi "chip" Can you do an ls -R /sys/class/hwmon? If I'm right you will find your sensors there, you can cat the _input files to get readings for now (until my patch is done). Please let me know the output of ls -R /sys/class/hwmon, I will need that to write libsensors support. Also I will be going on vacation for 6 days starting tomorrow, so this will have to wait till the next weekend, I hope to have something to test for you at the end of the next weekend.
Comment 6 Edmond Hui 2007-07-29 22:43:34 EDT
no... it seems not that simple... 8( #ls -R /sys/class/hwmon* ls: cannot access /sys/class/hwmon*: No such file or directory %114[ehui@mva]/sys/class#ls backlight graphics mem printer scsi_host usb_host bluetooth i2c-adapter misc rtc sound vc dma ieee80211 net scsi_device tty vtconsole dmi input pci_bus scsi_disk usb_device firmware leds pcmcia_socket scsi_generic usb_endpoint Thanks for looking into this.... have a good vacation. get back to me later. cheers,
Comment 7 Hans de Goede 2007-07-30 02:49:07 EDT
Ah, The driver got renamed too, so its probably not getting loaded because of this. Try: modprobe thinkpad_acpi And after that do the ls of both /proc/acpi and /sys/class/hwmon again. Also try removing and adding the applet again. Really leaving for vacation now :)
Comment 8 Edmond Hui 2007-07-30 08:14:22 EDT
indeed thinkpad_acpi is notloaded. after modprobe: [root@mva ~]# ls /proc/acpi ac_adapter dsdt fadt info thermal_zone battery embedded_controller fan power_resource video button event ibm processor wakeup [root@mva ~]# ls /sys/class/hwmon hwmon0 see you when you are back.
Comment 9 Hans de Goede 2007-08-02 12:51:26 EDT
Hi back, Could you do the following for me?: ls -R /proc/acpi/ibm ls -l /class/hwmon/hwmon0/device cat /class/hwmon/hwmon0/device/name And what happens if you remove and re-add the applet with the new driver loaded?
Comment 10 Edmond Hui 2007-08-03 08:23:13 EDT
Please see log below: [root@mva ~]# ls -R /proc/acpi/ibm ls: cannot access /proc/acpi/ibm: No such file or directory [root@mva ~]# ls -l /class/hwmon/hwmon0/device ls: cannot access /class/hwmon/hwmon0/device: No such file or directory [root@mva ~]# cat /class/hwmon/hwmon0/device/name [root@mva ~]# [root@mva ~]# !modp modprobe thinkpad_acpi [root@mva ~]# ls -R /proc/acpi/ibm /proc/acpi/ibm: beep brightness driver hotkey light video bluetooth cmos fan led thermal volume [root@mva ~]# ls -l /class/hwmon/hwmon0/device ls: cannot access /class/hwmon/hwmon0/device: No such file or directory [root@mva ~]# cat /class/hwmon/hwmon0/device/name cat: /class/hwmon/hwmon0/device/name: No such file or directory When I do a modprobe thinkpad_api and re-add, all senor is backed..... so I guess the problem is thinkpad_api somehow not automatically load?
Comment 11 Hans de Goede 2007-08-03 09:02:26 EDT
Ah, so it was just the module name change, and the new version does have backward compatibility, good! Please open a new bug against udev for the not autoloading, I'm closing this one. I still want to implement libsensors support for the now also available hwmon interface though. So could you still do the following for me? : [root@mva ~]# ls -l /class/hwmon/hwmon0/device ls: cannot access /class/hwmon/hwmon0/device: No such file or directory [root@mva ~]# cat /class/hwmon/hwmon0/device/name cat: /class/hwmon/hwmon0/device/name: No such file or directory My bad that should have been: ls -l /sys/class/hwmon/hwmon0/device cat /sys/class/hwmon/hwmon0/device/name
Comment 12 Edmond Hui 2007-08-06 10:36:09 EDT
k, will do. Thanks for the help!
Comment 13 Edmond Hui 2007-08-06 10:52:50 EDT