Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live CD. The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and the terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as default). In fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was better. Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature. I am also aware that this particular model is notorious for heating problems, and there are suggestions for cutting case for better air flow. However, i do not want to try this solution, but the temperature control by rhel gave me some hope! Posibly i am wrong. If anyone has a suggestion, or needs more information, pl. let me know. Thanks! Krishnan
On 14/09/13 16:23, Krishnan V wrote:
Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live CD. The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and the terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as default). In fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was better. Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature.
lm_sensors is indeed for monitoring only. Further, different drivers will report different temps so you need to be very careful you are not comparing apples with oranges. Even the same driver (e.g, coretemp) can report different temps depending if it's an old version in el5 vs a newer version in el6. Temperatures are generally relative so monitoring is useful to see if the temp goes up or down, but don't necessarily take the values as absolute.
I am also aware that this particular model is notorious for heating problems, and there are suggestions for cutting case for better air flow. However, i do not want to try this solution, but the temperature control by rhel gave me some hope! Posibly i am wrong. If anyone has a suggestion, or needs more information, pl. let me know.
Generally newer distro's (and/or kernels) will have better power management and thus should allow lower temps. I doubt running a LiveCD is the best way to evaluate a distro's power management performance, although I could be wrong.
Ned Slider wrote:
On 14/09/13 16:23, Krishnan V wrote:
Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live CD. The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and the terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as default). In fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was better. Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature.
lm_sensors is indeed for monitoring only. Further, different drivers will report different temps so you need to be very careful you are not comparing apples with oranges. Even the same driver (e.g, coretemp) can report different temps depending if it's an old version in el5 vs a newer version in el6. Temperatures are generally relative so monitoring is useful to see if the temp goes up or down, but don't necessarily take the values as absolute.
it may also depend on your GPU and graphics driver. Do you have a discrete GPU in your laptop? If yes, the proprietary driver may help by underclocking the GPU when it doesn't impact performance.
For example if you have an nvidia GPU, installing the correct nvidia driver will do this if your card supports it. Set up elrepo and install nvidia-detect, it will tell you which driver to install. http://elrepo.org/tiki/nvidia-detect Then install it, and run nvidia-settings to see the Powermizer options.
On Sat, Sep 14, 2013 at 9:26 PM, Nicolas Thierry-Mieg < Nicolas.Thierry-Mieg@imag.fr> wrote:
Ned Slider wrote:
On 14/09/13 16:23, Krishnan V wrote:
Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live
CD.
The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and
the
terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as
default). In
fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was
better.
Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature.
lm_sensors is indeed for monitoring only. Further, different drivers will report different temps so you need to be very careful you are not comparing apples with oranges. Even the same driver (e.g, coretemp) can report different temps depending if it's an old version in el5 vs a newer version in el6. Temperatures are generally relative so monitoring is useful to see if the temp goes up or down, but don't necessarily take the values as absolute.
it may also depend on your GPU and graphics driver. Do you have a discrete GPU in your laptop? If yes, the proprietary driver may help by underclocking the GPU when it doesn't impact performance.
Yes, I have a separate graphics card. It is ATI Radeon.
For example if you have an nvidia GPU, installing the correct nvidia driver will do this if your card supports it. Set up elrepo and install nvidia-detect, it will tell you which driver to install. http://elrepo.org/tiki/nvidia-detect Then install it, and run nvidia-settings to see the Powermizer options.
I will try for ATI Radeon and try this. Thank you.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hello, I just thought I would mention my efforts in this issue of overheating. I looked searched for the appropriate drivers, and the latest from AMD Catalyst 13.1 has some issues installing on Centos6.4 because of some X issues. Actually, the driver actually issues a warning about not finding some version of version.h in linux kernel. If i do a force install, X server crashes with some error message "Failed to load /usr/lib64/xorg/modules/drivers/fglrx_drv.so: /usr/lib64/xorg/modules/drivers/fglrx_drv.so: undefined symbol: noXFree86DRIExtension" After a bit of search, from what i understood, there is compatibility problem somewhere in X and this driver. The joy is that i may have to downgrade to 6.3; i am not sure it will work even then, then i install cpufreq tools, and set the governor to "conservative". then i also pass acpi_osi=Linux in grub.conf. All this does not seem to help much, as the steady temperature from lm_sensors is
acpitz-virtual-0 Adapter: Virtual device temp1: +59.0°C (crit = +90.0°C) temp2: +59.0°C (crit = +90.0°C)
coretemp-isa-0000 Adapter: ISA adapter Core 0: +55.0°C (high = +90.0°C, crit = +90.0°C) Core 1: +55.0°C (high = +90.0°C, crit = +90.0°C)
Sigh. I tried looking around for tools to measure gpu temperature, but apart from proprietary driver, which i am unable to install, there seems to be nothing. I also tried pwmcontrol, but apparently there is no pwm controller on the laptop. Any other suggestions, most welcome. Thanks! krishnan
On Sun, Sep 15, 2013 at 6:28 PM, Krishnan V v.srikrishnan@gmail.com wrote:
On Sat, Sep 14, 2013 at 9:26 PM, Nicolas Thierry-Mieg < Nicolas.Thierry-Mieg@imag.fr> wrote:
Ned Slider wrote:
On 14/09/13 16:23, Krishnan V wrote:
Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live
CD.
The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are
around
57-60 degrees when the laptop is just idling, ie, just the desktop and
the
terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I
have
faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as
default). In
fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not
even
able to load the correct modules, yet the temperature control was
better.
Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature.
lm_sensors is indeed for monitoring only. Further, different drivers will report different temps so you need to be very careful you are not comparing apples with oranges. Even the same driver (e.g, coretemp) can report different temps depending if it's an old version in el5 vs a newer version in el6. Temperatures are generally relative so monitoring is useful to see if the temp goes up or down, but don't necessarily take the values as absolute.
it may also depend on your GPU and graphics driver. Do you have a discrete GPU in your laptop? If yes, the proprietary driver may help by underclocking the GPU when it doesn't impact performance.
Yes, I have a separate graphics card. It is ATI Radeon.
For example if you have an nvidia GPU, installing the correct nvidia driver will do this if your card supports it. Set up elrepo and install nvidia-detect, it will tell you which driver to install. http://elrepo.org/tiki/nvidia-detect Then install it, and run nvidia-settings to see the Powermizer options.
I will try for ATI Radeon and try this. Thank you.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Sat, Sep 14, 2013 at 9:11 PM, Ned Slider ned@unixmail.co.uk wrote:
On 14/09/13 16:23, Krishnan V wrote:
Hi, I have an acer 5738g laptop on which i tried out the centos6.4 live CD. The laptop feels noticable hotter and i check the temperature using something like cat /proc/acpi/thermal_zone/. The temperatures are around 57-60 degrees when the laptop is just idling, ie, just the desktop and
the
terminal window open. I install lm_sensors using yum and it installs successfully, but there is no noticable reduction in temperature. I have faced this same problem using different varities of gnu/linux distributions: slackware, lubuntu, mandriva and now centos. By a freak chance, i had a chance to run RHEL 5.4 and to my great surprise, the temperature at idling was 43, similar to Windows(which came as default).
In
fact, the temperature control by rhel was what made me think of trying centos. I tried the lm_sensors configuration on rhel and it was not even able to load the correct modules, yet the temperature control was better. Now, i am not sure if lmsensors are for detecting temperatures only but also for cotrolling temperature.
lm_sensors is indeed for monitoring only. Further, different drivers will report different temps so you need to be very careful you are not comparing apples with oranges. Even the same driver (e.g, coretemp) can report different temps depending if it's an old version in el5 vs a newer version in el6. Temperatures are generally relative so monitoring is useful to see if the temp goes up or down, but don't necessarily take the values as absolute.
Ok. thanks for the explanation. In my case, there was perceptible temperature difference.
I am also aware that this particular model is notorious for heating problems, and there are suggestions for cutting case for better air flow. However, i do not want to try this solution, but the temperature control by rhel gave me some hope! Posibly i am wrong. If anyone has a suggestion, or needs more information, pl. let me know.
Generally newer distro's (and/or kernels) will have better power management and thus should allow lower temps. I doubt running a LiveCD is the best way to evaluate a distro's power management performance, although I could be wrong.
I think you are right, however I had tried Lubuntu about a month back with no luck. I want to install only after i see some difference. Thanks for your response.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
-
Krishnan V -
Ned Slider -
Nicolas Thierry-Mieg