After updating the kernel from gentoo-sources-2.6.37-r2 to gentoo-sources-2.6.38, the system fails to resume completely after a suspend (close lid). The desktop env is Gnome. After re-opening the lid the Gnome login screen is restored, but not the keyboard and mouse. Last error in Xorg.log is "Synaptics Touchpad: Read error No such device". If the system is using kernel 2.6.37-r2 then the resume functionality is OK (keyboard and mouse device are restored correctly). The graphic card driver is Nouveau from kernel (not the ebuild from portage) Reproducible: Always Steps to Reproduce: 1. Boot using kernel 2.6.38 2. Login to a Gnome session 3. Suspend the system (using Gnome menu System -->Shut down --> Suspend or by closing the lid) 4. Wait for suspend to finish 5. Try to restore the system (open the lid) Actual Results: Display is restored with Gnome login screen, but the login can not be used, because there is no keyboard or mouse Expected Results: Display should be restored with keyboard and mouse fully functional The suspend functionality is fine with kernel 2.6.37-r2 (gentoo-sources). The .config file for kernel 2.6.38 was created by copying the .config file from kernel 2.6.37-r2 and running "make oldconfig".
does this happy every time ? ive see this error once in a while for many versions (no idea when it started, or if it has always been this way). i simply suspend/resume again to make it come up.
Reproducible: Always
1) Please post your `emerge --info' output in a comment. 1) Please attach the Xorg log. 1) If relevant, please attach the (relevant part of your) dmesg output.
Created attachment 266789 [details] emerge info
Created attachment 266791 [details] xorg.log
Errors in dmesg: 1) not sure if is related, occurs before suspending the system: ------------[ cut here ]------------ WARNING: at kernel/printk.c:288 do_syslog+0x84/0x430() Hardware name: E8410 Attempt to access syslog with CAP_SYS_ADMIN but no CAP_SYSLOG (deprecated). Modules linked in: ext2 acpi_cpufreq freq_table mperf iwlagn pcmcia iwlcore sdhci_pci mac80211 e1000e cfg80211 rfkill firewire_ohci firewire_core yenta_socket ppdev pcmcia_rsrc sdhci mmc_core pcmcia_core crc_itu_t nouveau parport_pc parport video drm_kms_helper ttm drm Pid: 2689, comm: syslog-ng Not tainted 2.6.38-gentoo.neptun #1 Call Trace: [<ffffffff8104114a>] ? warn_slowpath_common+0x78/0x8c [<ffffffff81118e70>] ? kmsg_release+0x0/0x1b [<ffffffff810411ff>] ? warn_slowpath_fmt+0x45/0x4a [<ffffffff810416cb>] ? do_syslog+0x84/0x430 [<ffffffff81035c1d>] ? need_resched+0x1a/0x23 [<ffffffff81035c2b>] ? should_resched+0x5/0x24 [<ffffffff8141d100>] ? _cond_resched+0x9/0x20 [<ffffffff810c1560>] ? arch_local_irq_save+0x12/0x1b [<ffffffff81118e70>] ? kmsg_release+0x0/0x1b [<ffffffff811105b4>] ? proc_reg_open+0x8b/0x11f [<ffffffff81110529>] ? proc_reg_open+0x0/0x11f [<ffffffff810cbc23>] ? __dentry_open+0x123/0x252 [<ffffffff810d4c33>] ? dget+0x12/0x1d [<ffffffff810d7b70>] ? finish_open+0x97/0x159 [<ffffffff810d6db9>] ? do_path_lookup+0xdf/0x107 [<ffffffff810d808f>] ? do_filp_open+0x16f/0x601 [<ffffffff81035c1d>] ? need_resched+0x1a/0x23 [<ffffffff81035c2b>] ? should_resched+0x5/0x24 [<ffffffff8141d100>] ? _cond_resched+0x9/0x20 [<ffffffff81035c1d>] ? need_resched+0x1a/0x23 [<ffffffff81035c2b>] ? should_resched+0x5/0x24 [<ffffffff81035c1d>] ? need_resched+0x1a/0x23 [<ffffffff81035c2b>] ? should_resched+0x5/0x24 [<ffffffff810e1672>] ? alloc_fd+0x69/0x10f [<ffffffff810cc9d9>] ? do_sys_open+0x56/0xdd [<ffffffff810098d2>] ? system_call_fastpath+0x16/0x1b ---[ end trace 8a8c3d5d5ceccaa3 ]--- 2) After resume from suspend (can not access system directly, only using ssh): i8042: failed to resume active multiplexor, mouse won't work ... psmouse.c: Failed to deactivate mouse on isa0060/serio4 psmouse.c: Failed to enable mouse on isa0060/serio4 The only error is at the end of Xorg.0.log file; Synaptics Touchpad: Read error No such device The system has luks on root partition and on swap partition. /boot partition is not encrypted.
Problem fixed with a kernel parameter: i8042.nomux=1
I think this can be closed as "RESOLVED WORKSFORME". The i8042.nomux seems to be a known workaround for several issues with touchpads. This bug could be a 'minor regression' in 2.6.38 suspend/resume code mabye, but since there is a workaround, I think it can be closed.
Maybe this issue could be reported upstream, so the driver maintainer(s) would be aware of it ?
