Does "adb su" work? If not, you will have to root your device. Search google for how to root your android phone.
-- Mike On Sat, Mar 27, 2010 at 12:28 PM, ecss utdallas <[email protected]> wrote: > Thank you very much for your answer. But when I try to run "adb root", it > shows the message "adbd cannot run as root in production builds". Can you > tell me how to solve this problem? My phone is ADP2. Thank you very much~ > > > On Tue, Mar 23, 2010 at 3:22 PM, Mike Chan <[email protected]> wrote: >> >> You need root access to change cpufreq values. I'm not sure if this is >> available on the Google IO devices but try: >> >> adb root >> >> to switch into root mode, or adb su <foo> >> >> userspace is not compiled into the kernel for the ADP2, you will need >> to either compile a custom kernel, or just pin the min/max speeds to >> the speed you wish to set. >> >> -- Mike >> >> >> >> On Tue, Mar 23, 2010 at 1:16 PM, ecss utdallas <[email protected]> >> wrote: >> > Firstly, many thanks for your answer. That really helps a lot. I am >> > using >> > the ADP2 actually a google IO phone. When I did "adb shell cat >> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governor". The >> > result >> > is : "ondemand, performance". It means that the sytem on my phone only >> > supports ondemand and performance scaling governors. Also when I try to >> > use >> > "adb shell echo userspace > /sys/devices/.../scaling_governor", it >> > always >> > shows the problem that " Permission denied". Did you face similar >> > problem >> > when enable userspace governor? Would you please give me some advice on >> > how >> > to solve these problems? I will appreciate very very much for your help. >> > >> > On Mon, Mar 22, 2010 at 1:42 PM, Mike Chan <[email protected]> wrote: >> >> >> >> What phone did you buy? If you're talking about the Nexus One the >> >> userspace governor is already compiled into the kernel. Otherwise >> >> you'll probably have to recompile the kernel with the userspace >> >> governor. >> >> >> >> We do DVFS using the ondemand governor currently. >> >> >> >> To enable userspace governor: >> >> adb shell echo "userspace > >> >> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor" >> >> >> >> To set the speed: >> >> >> >> adb shell echo "xxx > >> >> /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" >> >> >> >> -- Mike >> >> >> >> >> >> >> >> On Sun, Mar 21, 2010 at 11:28 PM, xlshe <[email protected]> >> >> wrote: >> >> > I have bought the android develop phone 2. I want to do some research >> >> > about >> >> > power management on ADP2. But I wonder if ADP2 support Dynamic >> >> > Voltage >> >> > and >> >> > Frequency Scaling(DVFS). That means whether we can change the CPU >> >> > frequency >> >> > dynamically on ADP2. Previously, someone told me that I can rebuild >> >> > the >> >> > android OS kernel and turn on the user space and then I can set the >> >> > CPU >> >> > frequency. I have tried to rebuild the kernel just as " >> >> > http://source.android.com/documentation/building-for-dream"; said. But >> >> > I >> >> > still don't know how to turn on the user space when built the kernel >> >> > and >> >> > don't know how to set the CPU frequency on ADP2. Would you kindly >> >> > give >> >> > me >> >> > some support on how to dynamically set the CPU frequency on ADP2? I >> >> > will >> >> > appreciate very very much for your support. >> >> > >> >> > -- >> >> > unsubscribe: [email protected] >> >> > website: http://groups.google.com/group/android-kernel >> >> > >> >> > To unsubscribe from this group, send email to >> >> > android-kernel+unsubscribegooglegroups.com or reply to this email >> >> > with the >> >> > words "REMOVE ME" as the subject. >> >> > >> >> >> >> -- >> >> unsubscribe: [email protected] >> >> website: http://groups.google.com/group/android-kernel >> >> >> >> To unsubscribe from this group, send email to >> >> android-kernel+unsubscribegooglegroups.com or reply to this email with >> >> the >> >> words "REMOVE ME" as the subject. >> > >> > -- >> > unsubscribe: [email protected] >> > website: http://groups.google.com/group/android-kernel >> > >> > To unsubscribe from this group, send email to >> > android-kernel+unsubscribegooglegroups.com or reply to this email with >> > the >> > words "REMOVE ME" as the subject. >> > >> >> -- >> unsubscribe: [email protected] >> website: http://groups.google.com/group/android-kernel >> >> To unsubscribe from this group, send email to >> android-kernel+unsubscribegooglegroups.com or reply to this email with the >> words "REMOVE ME" as the subject. > > -- > unsubscribe: [email protected] > website: http://groups.google.com/group/android-kernel > > To unsubscribe from this group, send email to > android-kernel+unsubscribegooglegroups.com or reply to this email with the > words "REMOVE ME" as the subject. > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-kernel To unsubscribe from this group, send email to android-kernel+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
