i.MX Processorsのトピックi.mx 25 linux power management issue with Xfbdev -keybd https://community.nxp.com/t5/i-MX-Processors/i-mx-25-linux-power-management-issue-with-Xfbdev-keybd/m-p/246635#M21527 <HTML><HEAD></HEAD><BODY><P>Dear all,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We are facing linux power management failures .Our h/w and s/w details are</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ARM&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i.mx25</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LTIB&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp; L2.6.35-11-01-00_ER</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Linux kernel&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp; Linux - 2.6.31</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cross compiler&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp; arm-none-linux-gnueabi-* ( version-4.4.4)</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We make the LTIB for Gnome desktop environment.For normal follow it was working fine.</P><P>But when we are using the Power management (<SPAN style="color: #0000ff;">echo mem &gt; /sys/power/state</SPAN>) our device going to sleep.</P><P>But after wakeup&nbsp; <SPAN style="color: #993366;">'<STRONG>Xfbdev</STRONG></SPAN><STRONG>'</STRONG> not resuming properly.</P><P></P><P>Our Xfbdev cmd is</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "<STRONG style="color: #800080;">Xfbdev -mouse tslib,2,device=/dev/input/ts0 -keybd keyboard,,device=/dev/input/event0</STRONG>"</P><P></P><P>What we observe that, when we pass <STRONG style="color: #ff0000;">"-keybd keyboard,,device=/dev/input/event0"</STRONG>&nbsp; to Xfbdev resuming fails</P><P>(This event0 is device specific keyboard event ).</P><P></P><P>We checked linux standardised usb keyboard driver along with lenovo usb keyboard ,but same issue appears.</P><P></P><P>Note : If we kill the Xfbdev and run once again&nbsp; its working normally.If we again going&nbsp; to Power management Xfbdev resuming&nbsp; fails.</P><P></P><P>Thanks and regards,</P><P>Kilaru.Ramakrishna Rao,</P><P>Visiontek Pvt ltd,</P><P>India.</P><P></P><P><SPAN class="mce_paste_marker"><BR /></SPAN></P><P><SPAN class="mce_paste_marker"><BR /></SPAN></P></BODY></HTML> Mon, 20 May 2013 09:17:11 GMT ramakrishnarao 2013-05-20T09:17:11Z i.mx 25 linux power management issue with Xfbdev -keybd https://community.nxp.com/t5/i-MX-Processors/i-mx-25-linux-power-management-issue-with-Xfbdev-keybd/m-p/246635#M21527 <HTML><HEAD></HEAD><BODY><P>Dear all,</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We are facing linux power management failures .Our h/w and s/w details are</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ARM&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i.mx25</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LTIB&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp; L2.6.35-11-01-00_ER</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Linux kernel&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp;&nbsp; Linux - 2.6.31</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cross compiler&nbsp;&nbsp;&nbsp;&nbsp; --------&nbsp;&nbsp;&nbsp; arm-none-linux-gnueabi-* ( version-4.4.4)</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We make the LTIB for Gnome desktop environment.For normal follow it was working fine.</P><P>But when we are using the Power management (<SPAN style="color: #0000ff;">echo mem &gt; /sys/power/state</SPAN>) our device going to sleep.</P><P>But after wakeup&nbsp; <SPAN style="color: #993366;">'<STRONG>Xfbdev</STRONG></SPAN><STRONG>'</STRONG> not resuming properly.</P><P></P><P>Our Xfbdev cmd is</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "<STRONG style="color: #800080;">Xfbdev -mouse tslib,2,device=/dev/input/ts0 -keybd keyboard,,device=/dev/input/event0</STRONG>"</P><P></P><P>What we observe that, when we pass <STRONG style="color: #ff0000;">"-keybd keyboard,,device=/dev/input/event0"</STRONG>&nbsp; to Xfbdev resuming fails</P><P>(This event0 is device specific keyboard event ).</P><P></P><P>We checked linux standardised usb keyboard driver along with lenovo usb keyboard ,but same issue appears.</P><P></P><P>Note : If we kill the Xfbdev and run once again&nbsp; its working normally.If we again going&nbsp; to Power management Xfbdev resuming&nbsp; fails.</P><P></P><P>Thanks and regards,</P><P>Kilaru.Ramakrishna Rao,</P><P>Visiontek Pvt ltd,</P><P>India.</P><P></P><P><SPAN class="mce_paste_marker"><BR /></SPAN></P><P><SPAN class="mce_paste_marker"><BR /></SPAN></P></BODY></HTML> Mon, 20 May 2013 09:17:11 GMT https://community.nxp.com/t5/i-MX-Processors/i-mx-25-linux-power-management-issue-with-Xfbdev-keybd/m-p/246635#M21527 ramakrishnarao 2013-05-20T09:17:11Z