Bug 398149 – i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Lubos Kolouch 2012-01-08 14:12:20 UTC]

After upgrading kernel from 3.1.5 to 3.2.0 the notebook cannot wake from suspend to RAM properly.

It wakes, but the screen is blank and computer needs to be rebooted.

When woken, computer is working otherwise (can ping it, ssh to it etc.)

I git bisected it to commit
cd9dde44f47501394b9f0715b6a36a92aa74c0d0 is the first bad commit
commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0
Author: Adam Jackson <[e-mail]>
Date:   Fri Oct 14 12:43:49 2011 -0400

    drm/i915/dp: Fix the math in intel_dp_link_required
    
    The previous code was confused about units, which is pretty reasonable
    given that the units themselves are confusing.
    
    Signed-off-by: Adam Jackson <[e-mail]>
    Signed-off-by: Keith Packard <[e-mail]>

:040000 040000 3c0a0f38fc6482a401340e03fa3fbd687d11eda4 294673b782b3ecc93540f46f7721d385bd30cfac M	drivers


Reproducible: Always

Steps to Reproduce:
1. suspend to RAM
2. start the computer
Actual Results:  
Screen is blank

Expected Results:  
Screen should be normal as before suspend

Portage 2.2.0_alpha84 (default/linux/amd64/10.0/desktop, gcc-4.5.3, glibc-2.14.1-r1, 3.1.6-gentoo x86_64)
=================================================================
System uname: Linux-3.1.6-gentoo-x86_64-Intel-R-_Core-TM-_i5_CPU_M_540_@_2.53GHz-with-gentoo-2.1
Timestamp of tree: Sat, 07 Jan 2012 12:30:01 +0000
app-shells/bash:          4.2_p20
dev-java/java-config:     2.1.11-r3
dev-lang/python:          2.7.2-r3, 3.2.2
dev-util/cmake:           2.8.6-r4
dev-util/pkgconfig:       0.26
sys-apps/baselayout:      2.1
sys-apps/openrc:          0.9.7
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.9.6-r3, 1.11.2
sys-devel/binutils:       2.22-r1
sys-devel/gcc:            4.5.3-r2
sys-devel/gcc-config:     1.5-r2
sys-devel/libtool:        2.4.2
sys-devel/make:           3.82-r3
sys-kernel/linux-headers: 3.1 (virtual/os-headers)
sys-libs/glibc:           2.14.1-r1
Repositories: gentoo sunrise pentoo
Installed sets: 
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe -fomit-frame-pointer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=native -O2 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps=y"
FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles metadata-transfer news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch xattr"
FFLAGS=""
GENTOO_MIRRORS="http://gentoo.mirror.web4u.cz/ ftp://gentoo.mirror.web4u.cz/ http://gentoo.supp.name/ http://gd.tuwien.ac.at/opsys/linux/gentoo/ http://mirror.netcologne.de/gentoo/"
LC_ALL="en_US.UTF8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="cs en de"
MAKEOPTS="-j4"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp/portage/"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/var/lib/layman/sunrise /var/lib/layman/pentoo"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac acl acpi alsa amd64 amr apng bash-completion berkdb branding bzip2 cairo cdda cli consolekit context cracklib crypt cups cxx dbus device-mapper dga dia dri dts dv dvb dvd dvdr emboss encode exif extensions extra extras fam fat ffmpeg firefox flac fontconfig foomaticdb fortran gd gdbm gdu gif gimp git gnome-keyring gphoto2 gpm graphics gstreamer gtk hddtemp iconv imagemagick imap imlib ipv6 ithreads java jpeg jpeg2k latex lcms libcaca libnotify lm_sensors lzo mad maildir matroska mbox mjpeg mmx mmxext mng modules mp3 mp4 mpeg mssql mudflap multilib ncurses network nls nptl nptlonly odbc ogg opengl openmp pam pango pcre pdf pdfimport perl plugins pmu png policykit pop ppds pppd python qt3support quicktime rar readline recode samba sasl scanner sdl secure-delete session sip smime smtp sndfile snmp socks5 spell sqlite sse sse2 ssl startup-notification subtitles subversion svg sysfs syslog tcpd theora threads tiff timidity tk tokyocabinet tools tordns truetype twolame udev unicode unzip usb v4l2 vcd video videos vim-syntax vorbis wav wmf x264 xanim xattr xcb xcomposite xetex xfce xfs xml xorg xosd xrandr xscreensaver xulrunner xv xvid zip zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan stage tables krita karbon braindump" CAMERAS="canon adc65 agfa cl20 aox barbie casio clicksmart310 digigr8 digita dimera directory enigma13 fuji gsmart300 hp215 iclick jamcam jd11 kodak konica largan lg_gsm mars minolta mustek panasonic polaroid ptp2 ricoh samsung sierra sipix smal sonix sonydscf1 sonydscf55 soundvision spca50x sq905 tv0674 stv0680 sx330z template toshiba" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" DVB_CARDS="usb-af9015" ELIBC="glibc" FOO2ZJS_DEVICES="km2300" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="cs en de" PHP_TARGETS="php5-3" QEMU_USER_TARGETS="x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="intel" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, INSTALL_MASK, LANG, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

[Comment 1 Lubos Kolouch 2012-01-08 14:19:45 UTC]

The message in syslog is:

kernel: [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting

[Comment 2 Lubos Kolouch 2012-01-13 20:15:25 UTC]

The problem persists with
gentoo-sources-3.2.1

[Comment 3 Lubos Kolouch 2012-01-20 19:43:51 UTC]

still does not work with git-sources-3.3-rc1

[Comment 4 Lubos Kolouch 2012-01-27 20:30:47 UTC]

So, this issue is fixed by Keith Packard by two patches - quick one will be in 3.3
and more complex one in 3.4