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Description of problem: I was attempting to leave full-screen (F11) mode in Google Chrome. The display froze for a few seconds, then went dark. Additional info: reporter: libreport-2.2.3 WARNING: CPU: 0 PID: 1363 at drivers/gpu/drm/i915/intel_display.c:931 assert_pll+0x68/0x70 [i915]() PLL state assertion failure (expected on, current off) Modules linked in: fuse ccm ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep iTCO_wdt gpio_ich iTCO_vendor_support dell_wmi sparse_keymap dell_laptop dcdbas snd_hda_codec_idt snd_hda_codec_generic coretemp snd_hda_intel kvm_intel snd_hda_controller kvm snd_hda_codec snd_hwdep snd_seq snd_seq_device arc4 microcode sdhci_pci snd_pcm iwldvm serio_raw mac80211 sdhci r592 mmc_core memstick lpc_ich i2c_i801 mfd_core cdc_ether usbnet iwlwifi cdc_wdm mii btusb snd_timer cdc_acm cfg80211 snd soundcore shpchp bluetooth rfkill wmi acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd sunrpc firewire_ohci i915 ata_generic pata_acpi firewire_core crc_itu_t i2c_algo_bit tg3 drm_kms_helper ptp drm pps_core i2c_core video CPU: 0 PID: 1363 Comm: upowerd Not tainted 3.15.10-201.fc20.x86_64 #1 Hardware name: Dell Inc. Inspiron 1420 /0DT492, BIOS A10 12/19/2008 0000000000000000 000000005eb4f873 ffff88005a97f9a8 ffffffff816ef848 ffff88005a97f9f0 ffff88005a97f9e0 ffffffff8108927d 0000000000000001 000000000000a800 ffff880037122000 ffff88003691f000 0000000000000001 Call Trace: [<ffffffff816ef848>] dump_stack+0x45/0x56 [<ffffffff8108927d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff810892fc>] warn_slowpath_fmt+0x5c/0x80 [<ffffffffa011455b>] ? gen4_read32+0x4b/0xc0 [i915] [<ffffffffa0122008>] assert_pll+0x68/0x70 [i915] [<ffffffffa0127931>] intel_crtc_load_lut+0x1c1/0x1e0 [i915] ------------[ cut here ]------------ [<ffffffffa0127b66>] i9xx_crtc_enable+0x216/0x420 [i915] [<ffffffffa012a947>] __intel_set_mode+0x827/0x1640 [i915] [<ffffffffa012de16>] intel_set_mode+0x16/0x30 [i915] [<ffffffffa012e04c>] intel_get_load_detect_pipe+0x21c/0x4c0 [i915] [<ffffffffa01574fd>] intel_tv_detect+0x10d/0x560 [i915] [<ffffffff811f6666>] ? path_openat+0x176/0x670 [<ffffffffa0033d5e>] status_show+0x3e/0x80 [drm] [<ffffffff8145a050>] dev_attr_show+0x20/0x60 [<ffffffff816f53c2>] ? mutex_lock+0x12/0x2f [<ffffffff81262fcc>] sysfs_kf_seq_show+0xcc/0x1e0 [<ffffffff81261963>] kernfs_seq_show+0x23/0x30 [<ffffffff8120a4fa>] seq_read+0x16a/0x3b0 [<ffffffff812621b5>] kernfs_fop_read+0xf5/0x160 [<ffffffff811e65bb>] vfs_read+0x9b/0x160 [<ffffffff811e7225>] SyS_read+0x55/0xd0 [<ffffffff816ff969>] system_call_fastpath+0x16/0x1b
Created attachment 935152 [details] File: dmesg
Created attachment 937240 [details] error info from /sys/class/drm/card0/error Hello, everybody. I was able to reliably reproduce this issue with the kernel in use above, 3.15.10-201.fc20.x86_64. Then, after the upgrade to kernel 3.16.2-200.fc20.x86_64, the error is less severe, at least for the one time I've tried it. X and the Chrome web browser remain running, and the following messages appear in the dmesg output: [ 163.704211] [drm] stuck on render ring [ 163.705282] [drm] GPU HANG: ecode 0:0x9f47f9fd, in chrome [1613], reason: Ring hung, action: reset [ 163.705287] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 163.705289] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 163.705291] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 163.705301] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 163.705303] [drm] GPU crash dump saved to /sys/class/drm/card0/error [ 163.707997] [drm:i915_reset] *ERROR* Failed to reset chip: -19 [ 164.039708] chrome[1720]: segfault at 280 ip 00007f2440249c98 sp 00007fff7f66e540 error 4 in i965_dri.so[7f243ff1d000+500000] I'll attach the data that I copied out of /sys/class/drm/card0/error. Let me know if I can provide more information.
*** This bug has been marked as a duplicate of bug 1101633 ***