Public bug reported: PC: Asus EeePC 1000H (and P4 older desktop) Modem: ZTE MF636 O.S.: Karmic Koala Desktop i386, Alpha 2, Alpha 3, daily builds of 29-July, daily updates, newer kernels up to daily build
Final: Linux KK729 2.6.31-999-generic #200908031000 SMP Mon Aug 3 09:44:18 UTC 2009 i686 GNU/Linux Tested with Network Manager: 0.7.1-0ubuntu1 and 0.7.1.git.5.272c6a626-0ubuntu1~nm1 ZTE MF636 3G modem appears as ZeroCD drive (19d2:2000) in original (as bought) mode. When connected to my EeePC 1000H (also checked to an older Pendium4 desktop) running any version of Karmic (Alpha 2, 3, updated till today) firstly appears as the CD-drive. When ejecting it the 'real modem mode' appears (19d2:0031 at lsusb) and some /dev/ttyUSBx ports are created (shown into dmesg output). After a while the ZeroCD re-appears and some malfunctioning is happening. With kernel versions up to kernel 2.6.31-4.22 the system got totally frozen (no mouse, no clock, no keyboard). Using newer (rc5) versions of kernel (daily builds till today's 3-Aug) the behavior is better and the system is operating (except some small delays in keyboard entry using terminal possibly when negotiating with the modem). Trying to 'investigate' the problem I noticed that the /dev/ttyUSBx ports created are looping (created, partially removed, recreated etc.) as shown in the attached dmesg which includes everything from boot till the physical removal of the modem. ********** In brief the actions seemed to be performed by the system are: Modem attached, USB SCSI CD-ROM found, sr0 created. 'sudo eject sr0' sr0 ejected, new device scanned, usbserial (or option) creates ttyUSB0-1-2 MMC Storage detected USB SCSI C-ROM detected again sdb removable disk attached (card reader of the modem?) ttyUSB0-1 disconnected [ 330.925586] option: option_instat_callback: error -108 ttyUSB2 disconnected option driver creates some more ports ttyUSB3-4-5 sr1 scsi CD-ROM attached ttyUSB5-4 disconnected [ 336.292793] option: option_instat_callback: error -108 ttyUSB3 disconnected and all above again (creating ttyUSB6-7-8, disconnecting ttyUSB8,7 error -108, ...) ********** Notes: - most times after 'purging' network manager the system did not get frozen (tested with kernels up to 2.6.31-4.22) and could connect fine using wvdial. Full iso images are downloaded in this manner (10-12 hours connected) so there is no problem with my modem/provider or Karmic update (generally). - tested also PPA version of Network Manager with approximately same results As this is my first 'bug' report, please help me be more accurate annd ask me provide any more information. For reference I supply the following links with more historical data: http://ubuntuforums.org/showthread.php?t=1202430 my posts at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/373821 http://www.acomelectronics.com/GeorgeVita/ZTEonUBUNTU.html Regards, George ** Affects: ubuntu Importance: Undecided Status: New ** Tags: mf636 networkmanager zte -- ZTE MF636 3G modem cannot used in Karmic https://bugs.launchpad.net/bugs/408555 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
